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'''Source of Reference: official [https://dodcio.defense.gov/CMMC/Documentation/ CMMC Glossary] from Department of Defense Chief Information Officer (DoD CIO).'''
For inquiries and reporting errors on this wiki, please [mailto:support@cmmctoolkit.org contact us]. Thank you.
== A ==
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|-
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|Access Authority
|Access Authority
|An entity responsible for monitoring and granting access privileges for other authorized entities.
|An entity responsible for monitoring and granting access privileges for other authorized entities.
|
|
* CNSSI 4009
* CNSSI 4009
|-
|-
|Access Control (AC)
|Access Control (AC)
|
|The process of granting or denying specific requests to:
The process of granting or denying specific requests to:
* obtain and use information and related information processing services; and
* obtain and use information and related information processing services; and
* enter specific physical facilities (e.g., federal buildings, military establishments, border crossing entrances).
* enter specific physical facilities (e.g., federal buildings, military establishments, border crossing entrances).
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|-
|-
|Access Control Policy (Access Management Policy)
|Access Control Policy (Access Management Policy)
|The set of rules that define the conditions under which an access may take place.
|The set of rules that define conditions under which an access may take place.
|
|
* NISTIR 7316
* NISTIR 7316
|-
|-
|Access Profile
|Access Profile
|Association of a user with a list of protected objects the user may access.
|Association of a user with a list of protected objects user may access.
|
* CNSSI 4009
|-
|Accountability
|The security goal that generates requirement for actions of an entity to be traced uniquely to that entity. This supports nonrepudiation, deterrence, fault isolation, intrusion detection and prevention, and after-action recovery and legal action.
|
* NIST SP 800-27
|-
|Activity / Activities
|Set of actions that are accomplished within a practice in order to make it successful. Multiple activities can make up a practice. Practices may have only one activity or a set of activities.
|
* CMMC
|-
|Administrative Safeguards
|Administrative actions and policies and procedures to manage selection, development, implementation, and maintenance of security measures to protect any electronic information that is by definition “protected information” (e.g., protected health information) and to manage conduct of covered entity’s workforce in relation to protection of that information.
|
* NIST SP 800-66 Rev 1 (adapted)
|-
|Advanced Persistent Threat (APT)
|An adversary that possesses sophisticated levels of expertise and significant resources which allow it to create opportunities to achieve its objectives by using multiple attack vectors (e.g., cyber, physical, and deception).The se objectives typically include establishing and extending footholds within information technology infrastructure of targeted organizations for purposes of exfiltrating information, undermining or impeding critical aspects of a mission, program, or organization; or positioning itself to carry outThe se objectives in future. advanced persistent threat:
* pursues its objectives repeatedly over an extended period of time;
* adapts to defenders’ efforts to resist it;, and
* is determined to maintain level of interaction needed to execute its objectives.
|
* NIST SP 800-39
|-
|Adversary
|Individual, group, organization, or government that conducts or has intent to conduct detrimental activities.
|
|
* CNSSI 4009
* CNSSI 4009
|-
|-
|Accountability 
|Adversarial Assessment
The security goal that generates the requirement for actions of an entity to be traced  uniquely to that entity. This supports nonrepudiation, deterrence, fault isolation, intrusion  detection and prevention, and after-action recovery and legal action.
|Assesses ability of an organization equipped with a system to support its mission while withstanding cyber threat activity representative of an actual adversary.
Source: NIST SP 800-27 
|
Activity / Activities 
* DoDI 5000.02 Enclosure 14 (adapted)
Set of actions that are accomplished within a practice in order to make it successful. Multiple  activities can make up a practice. Practices may have only one activity or a set of activities.
|-
Source: CMMC 
|Air Gap
Administrative Safeguards 
|An interface between two systems that:
Administrative actions and policies and procedures to manage the selection, development,  implementation, and maintenance of security measures to protect any electronic  information that is by definition “protected information” (e.g., protected health information) and to manage  the conduct of the covered entity’s workforce in relation to the protection of that information.
* are not connected physically and
Source: NIST SP 800-66 Rev 1 (adapted)
* do not have any logical connection automated (i.e., data is transferred through interface only manually, under human control).
|
* IETF RFC 4949 v2
|-
|Alert
|An internal or external notification that a specific action has been identified within an organization’s information systems.
|
* CNSSI 4009 (adapted)
|-
|Anti-Malware Tools
|Tools that help identify, prevent execution, and reverse engineer malware.
|
* CMMC
|-
|Anti-Spyware Software
|A program that specializes in detecting both malware and non-malware forms of spyware.
|
* NIST SP 800-69
|-
|Anti-Tamper
|Systems engineering activities intended to deter and/or delay exploitation of technologies in a system in order to impede countermeasure development, unintended technology transfer, or alteration of a system.
|
* DoDI 5200.39 (adapted)
|-
|Anti-Virus Software
|A program that monitors a computer or network to identify all major types of malware and prevent or contain malware incidents.
|
* NIST SP 800-83
|-
|Assessment
|The testing or evaluation of security controls to determine extent to which controls are implemented correctly, operating as intended, and producing desired outcome with respect to meeting security requirements for an information system or organization.
|
* NIST SP 800-37 Rev. 2
|-
|Assessment
|Assessment is term used by CMMC for activity performed by C3PAO to evaluate CMMC level of a DIB contractor. Self-assessment is term used by CMMC for activity performed by a DIB contractor to evaluateThe ir own CMMC level.
|
* CMMC
|-
|Asset (Organizational Asset)
|Anything that has value to an organization, including, but not limited to, another organization, person, computing device, information technology (IT) system, IT network, IT circuit, software (both an installed instance and a physical instance), virtual computing platform (common in cloud and virtualized computing), and related hardware (e.g., locks, cabinets, keyboards).
|
* NISTIR 7693
* NISTIR 7694
|-
|Asset Custodian (Custodian)
|A person or group responsible for day-to-day management, operation, and security of an asset.
|
* CMMC
|-
|Asset Management (AM)
|Management of organizational assets. This may include inventory, configuration, destruction, disposal, and updates to organizational assets.
|
* CERT RMM v1.2
|-
|Asset Owner (Information Asset Owner)
|A person or organizational unit (internal or external to organization) with primary responsibility for viability, productivity, security, and resilience of an organizational asset. For example, accounts payable department is owner of vendor database.
|
* CERT RMM v1.2
|-
|Asset Types
|The following asset types should be included when classifying assets:
* People – employees, contractors, vendors, and external service provider personnel;
* Technology – servers, client computers, mobile devices, network appliances (e.g., firewalls, switches, APs, and routers), VoIP devices, applications, virtual machines, and database systems;
* Facilities – physical office locations, satellite offices, server rooms, datacenters, manufacturing plants, and secured rooms; and
* External Service Provider (ESP) – external people, technology, or facilities that organization utilizes, including Cloud Service Providers, Managed Service Providers, Managed Security Service Providers, Cybersecurity-as-a-Service Providers.
|
* CMMC
|-
|Attack Surface
|The set of points on boundary of a system, a system element, or an environment where an attacker can try to enter, cause an effect on, or extract data from.
|
* NIST SP 800-160 Vol. 2
|-
|Attribute-Based Access Control (ABAC)
|Access control based on attributes associated with and about subjects, objects, targets, initiators, resources, or environment. An access control rule set defines combination of attributes under which an access may take place.
See Glossary: Identity, Credential, and Access Management (ICAM)
|
* CNSSI 4009
|-
|Availability
|* Ensuring timely and reliable access to and use of information.
* Timely, reliable access to data and information services for authorized users.
|
* CNSSI 4009
|-
|Audit
|Independent review and examination of records and activities to assess adequacy of system controls, to ensure compliance with established policies and operational procedures, and to recommend necessary changes in controls, policies, or procedures.
|
* NIST SP 800-32
|-
|Audit Log
|A chronological record of system activities.Includes records of system accesses and operations performed in a given period.
|
* CNSSI 4009
|-
|Audit Record
|An individual entry in an audit log related to an audited event.
|
* NIST SP 800-53 Rev 5
|-
|Authentication
|A security measure designed to protect a communications system against acceptance of fraudulent transmission or simulation by establishing validity of a transmission, message, originator, or a means of verifying an individual's eligibility to receive specific categories of information.
|
* CNSSI 4005
* NSA/CSS Manual Number 3-16
|-
|Au nticator
|Something that claimant possesses and controls (typically a cryptographic module or password) that is used to au nticate claimant’s identity. This was previously referred to as a token.
|
* NIST SP 800-53 Rev 5
|-
|Authoritative Source (Trusted Source)
|An entity that has access to, or verified copies of, accurate information from an issuing source such that a Credential Service Provider (CSP) can confirm validity of identity evidence supplied by an applicant during identity proofing.An issuing source may also be an authoritative source. Often, authoritative sources are determined by a policy decision of agency or CSP before the y can be used in identity proofing validation phase.
|
* NIST SP 800-63-3
|-
|Authorization
|The right or a permission that is granted to a system entity (user, program, or process) to access a system resource.
|
* NIST SP 800-82 Rev 2 (adapted)
|-
|Awareness
|A learning process that sets stage for training by changing individual and organizational attitudes to realize importance of security and adverse consequences of its failure.
|
* NIST SP 800-16
|-
|Awareness and Training Program
|Explains proper rules of behavior for use of agency information systems and information.The program communicates information technology (IT) security policies and procedures that need to be followed. (i.e., NSTISSD 501, NIST SP 800-50).
|
* CNSSI 4009
|}


CMMC Glossary and Acronyms  Version 2.0 1   
== B ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Backup
|A copy of files and programs made to facilitate recovery, if necessary.
|
* NIST SP 800-34
* CNSSI 4009
|-
|Baseline
|Hardware, software, databases, and relevant documentation for an information system at a given point in time.
|
* CNSSI 4009
|-
|Baseline Configuration
|A set of specifications for a system, or Configuration Item (CI) within a system, that has been formally reviewed and agreed on at a given point in time, and which can be changed only through change control procedures. baseline configuration is used as a basis for future builds, releases, and/or changes.
|
* NIST SP 800-128
|-
|Baseline Security
|The minimum security controls required for safeguarding an IT system based on its identified needs for confidentiality, integrity, and/or availability protection.
|
* NIST SP 800-16
|-
|Baselining
|Monitoring resources to determine typical utilization patterns so that significant deviations can be detected.
|
* NIST SP 800-61
|-
|Blacklist
|A list of discrete entities, such as IP addresses, host names, applications, software libraries, and so forth that have been previously determined to be associated with malicious activity thus requiring access or execution restrictions.
|
* NIST SP 800-114 (adapted)
* NIST SP 800-94 (adapted)
* CNSSI 4009 (adapted)
|-
|Blacklisting Software
|A list of applications (software) and software libraries that are forbidden to execute on an organizational asset.
|
* NIST SP 800-94 (adapted)
|-
|Blue Team
|
* The group responsible for defending an organization’s use of information systems by maintaining its security posture against a group of mock attackers (i.e., Red Team).Typically, Blue Team and its supporters must defend against real or simulated attacks:
** over a significant period of time;
** in a representative operational context (e.g., as part of an operational exercise); and
** according to rules established and monitored with help of a neutral group refereeing simulation or exercise (i.e., White Team).
* The term Blue Team is also used for defining a group of individuals who conduct operational network vulnerability evaluations and provide mitigation techniques to customers who have a need for an independent technical review ofThe ir network security posture. Blue Team identifies security threats and risks in operating environment, and in cooperation with customer, analyzes network environment and its current state of security readiness. Based on Blue Team findings and expertise,The y provide recommendations that integrate into an overall community security solution to increase customer's cyber security readiness posture. Often, a Blue Team is employed by itself or prior to a Red Team employment to ensure that customer's networks are as secure as possible before having Red Team test systems.
|
* CNSSI 4009 (adapted)
|-
|Breach
|An incident where an adversary has gained access to internal network of an organization or an organizationally owned asset in a manner that breaks organizational policy for accessing cyber assets and results in loss of information, data, or asset. A breach usually consists of loss of an asset due to gained access.
|
* CMMC
|}


Glossary 
== C ==
Advanced Persistent Threat (APT)
{|class="wikitable" style="width: 85%;"
An adversary that possesses sophisticated levels of expertise and significant resources which allow it to create opportunities to achieve its objectives by using multiple attack vectors (e.g., cyber, physical, and deception). These objectives typically include establishing and extending  footholds within the information technology infrastructure of the targeted organizations for purposes of exfiltrating information, undermining or impeding critical aspects of a mission, program, or organization; or positioning itself to carry out these objectives in the future. The  advanced persistent threat: 
! style="width: 15%"| Term
 pursues its objectives repeatedly over an extended period of time; 
! style="width: 65%"| Description
 adapts to defenders’ efforts to resist it;, and  
! style="width: 20%"| Source
 is determined to maintain the level of interaction needed to execute its objectives.
|-
Source: NIST SP 800-39 
|Change Control (Change Management)
Adversary 
|The process of regulating and approving changes to hardware, firmware, software, and documentation throughout development and operational life cycle of an information system.
Individual, group, organization, or government that conducts or has the intent to conduct  detrimental activities.
|
Source: CNSSI 4009 
* NIST SP 800-128
Adversarial Assessment 
* CNSSI 4009
Assesses the ability of an organization equipped with a system to support its mission while  withstanding cyber threat activity representative of an actual adversary.
|-
Source: DoDI 5000.02 Enclosure 14 (adapted)
|Change Management
Air Gap 
|See Glossary: Change Control
An interface between two systems that: 
|
 are not connected physically and
|-
 do not have any logical connection automated (i.e., data is transferred through the 
|Cipher
interface only manually, under human control).
|
Source: IETF RFC 4949 v2 
* Any cryptographic system in which arbitrary symbols or groups of symbols, represent units of plain text, or in which units of plain text are rearranged, or both.
Alert 
* A series of transformations that converts plaintext to ciphertext using Cipher Key.
An internal or external notification that a specific action has been identified within an  organization’s information systems.
|
Source: CNSSI 4009 (adapted)
* FIPS 197
Anti-Malware Tools 
|-
Tools that help identify, prevent execution, and reverse engineer malware.
|Ciphertext
Source: CMMC 
|A term that describes data in its encrypted form.
Anti-Spyware Software 
|
A program that specializes in detecting both malware and non-malware forms of spyware.
* NIST SP 800-57 Part 1 Rev 3
Source: NIST SP 800-69 
|-
Anti-Tamper 
|CMMC Assessment Scope
Systems engineering activities intended to deter and/or delay exploitation of technologies  in  a system  in  order  to impede  countermeasure  development, unintended  technology  transfer, or alteration of a system.
|Includes all assets in contractor’s environment that will be assessed.
Source: DoDI 5200.39 (adapted) 
|
* CMMC
|-
|CMMC Asset Categories
|CMMC defined five asset categories for scoping activities: CUI Assets, Security Protection Assets, Contractor Risk Managed Assets, Specialized Assets, and Out-of-Scope Asset. Asset categories determine: assessment, segmentation, documentation, and management of assets.
|
* CMMC
|-
|Compliance
|Conformity in fulfilling official requirements.
|
* Merriam-Webster
|-
|Component
|A discrete identifiable information technology asset that represents a building block of a system and may include hardware, software, and firmware.
|
* NIST SP 800-171 Rev. 2 under system component
* NIST SP 800-128
|-
|Confidentiality
|Preserving authorized restrictions on access and disclosure, including means for protecting personal privacy and proprietary information.
|
* 44 U.S.C. 3542
|-
|Configuration Item (CI)
|An aggregation of system components that is designated for configuration management and treated as a single entity in configuration management process.
|
* NIST SP 800-53 Rev 5
|-
|Configuration Management (CM)
|A collection of activities focused on establishing and maintaining integrity of information technology products and systems, through control of processes for initializing, changing, and monitoring configurations of those products and systems throughout system development life cycle.
|
* NIST SP 800-53 Rev 5
|-
|Consequence
|Effect (change or non-change), usually associated with an event or condition or with system and usually allowed, facilitated, caused, prevented, changed, or contributed to by event, condition, or system.
|
* NIST SP 800-160
|-
|Container (Information Asset Container)
|A physical or logical location where assets are stored, transported, and processed.A container can encompass technical containers (servers, network segments, personal computers), physical containers (paper, file rooms, storage spaces, or other media such as CDs, disks, and flash drives), and people (including people who might have detailed knowledge about information asset).
|
* CERT RMM v1.2
|-
|Context Aware
|The ability of a system or a system component to ga r information about its environment at any given time and adapt behaviors accordingly. Contextual or context-aware computing uses software and hardware to automatically collect and analyze data to guide responses.
|
* CMMC
|-
|Continuity of Operations
|An organization’s ability to sustain assets and services in response to a disruptive event. It is typically used interchangeably with service continuity or continuity of service.
|
* CERT RMM v1.2 (adapted)
|-
|Consequence
|Effect (change or non-change), usually associated with an event or condition or with system and usually allowed, facilitated, caused, prevented, changed, or contributed to by event, condition, or system.
|
* NIST SP 800-160
|-
|Continuous
|Continuing without stopping; ongoing.
|
* Merriam-Webster (adapted)
|-
|Continuous Monitoring
|Maintaining ongoing awareness to support organizational risk decisions.Maintaining ongoingThe awarenessThe ofThe informationThe security,The vulnerabilities,The andThe threatsThe toThe support organizational risk management decisions.
|
* CNSSI 4009-2015
* NIST SP 800-137
* NIST SP 800-150
|-
|Contractor Risk Managed Assets
|Contractor Risk Managed Assets are capable of, but are not intended to, process, store, or transmit CUI because of security policy, procedures, and practices in place.
|
* CMMC
|-
|Control
|The methods, policies, and procedures—manual or automated—used by an organization to safeguard and protect assets, promote efficiency, or adhere to standards. A measure that is modifying risk.
Note: controls include any process, policy, device, practice, or other actions which modify risk.
|
* NISTIR 8053 (adapted)
|-
|Controlled Unclassified Information (CUI)
|Information that requires safeguarding or dissemination controls pursuant to and consistent with laws, regulations, and government-wide policies, excluding information that is classified under Executive Order 13526, Classified National Security Information, December 29, 2009, or any predecessor or successor order, or Atomic Energy Act of 1954, as amended.
|
* NIST SP 800-171 Rev 2
|-
|Covered Defense Information (CDI)
|A term used to identify information that requires protection under DFARS Clause 252.204-7012. Unclassified controlled technical information (CTI) or other information, as described in CUI Registry, that requires safeguarding or dissemination controls pursuant to and consistent with law, regulations, and Government wide policies and is:
* Marked or o rwise identified in contract, task order, or delivery order and provided to contractor by or on behalf of, DoD in support of performance of contract; OR
* Collected, developed, received, transmitted, used, or stored by-or on behalf of-contractor in support of performance of contract.
|
* DFARS Clause 252.204-7012
|-
|Cryptographic Hashing Function
|The process of using a ma matical algorithm against data to produce a numeric value that is representative of that data.
|
* CNSSI 4009
|-
|CUI Assets
|Assets that process, store, or transmit CUI.
|
* CMMC
|-
|Custodian
|See Glossary: Asset Custodian
|
|-
|Cybersecurity
|Prevention of damage to, protection of, and restoration of computers, electronic communications systems, electronic communications services, wire communication, and electronic communication, including information contained rein, to ensure its availability, integrity, authentication, confidentiality, and nonrepudiation.
|
* NSPD-54/HSPD-23
|}


CMMC Glossary and Acronyms  Version 2.0 2   
== D ==
{|class="wikitable" style="width: 85%;"
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! style="width: 65%"| Description
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|-
|Defense Industrial Base (DIB)
|The worldwide industrial complex that enables research and development, as well as design, production, delivery, and maintenance of military weapons systems, subsystems, and components or parts, to meet U.S. military requirements.
|
* DIB Sector-Specific Plan
* DHS CISA
|-
|Dependency
|When an entity has access to, control of, ownership in, possession of, responsibility for, or other defined obligations related to one or more assets or services of organization.
|
* CERT RMM v1.2 (adapted)
|-
|Demilitarized Zone (DMZ)
|A perimeter network segment that is logically between internal and external networks. Its purpose is to enforce internal network’s Information Assurance (IA) policy for external information exchange and to provide external, untrusted sources with restricted access to releasable information while shielding internal networks from outside attacks.
|
* CNSSI 4009
|-
|Domain
|Grouping of like practices based on 14 control families set forth in NIST SP 800-171.
|
* CMMC
|}


Glossary 
== E ==
Anti-Virus Software 
{|class="wikitable" style="width: 85%;"
A program that monitors a computer or network to identify all major types of malware and  prevent or contain malware incidents.
! style="width: 15%"| Term
Source: NIST SP 800-83 
! style="width: 65%"| Description
Assessment 
! style="width: 20%"| Source
The testing or evaluation of security controls to determine the extent to which the controls  are implemented correctly, operating as intended, and producing the desired outcome with  respect to meeting the security requirements for an information system or organization.  
|-
Source: NIST SP 800-37 Rev. 2
|Encryption
Assessment is the term used by CMMC for the activity performed by the C3PAO to evaluate  the CMMC level of a DIB contractor. Self-assessment is the term used by CMMC for the activity  performed by a DIB contractor to evaluate their own CMMC level. 
|The process of changing plaintext into cipher text.
Source: CMMC 
|
Asset (Organizational Asset) 
* NISTIR 7621 Rev 1
Anything  that  has  value  to  an  organization, including,  but  not  limited  to, another  organization, person, computing device, information technology (IT) system, IT network, IT  circuit, software (both an installed instance and a physical instance), virtual computing  platform (common in cloud and virtualized computing), and related hardware (e.g., locks, cabinets, keyboards).
* CNSSI 4009
Source(s): NISTIR 7693, NISTIR 7694 
|-
Asset Custodian (Custodian) 
|Encryption Policies
A person or group responsible for the day-to-day management, operation, and security of 
|Policies that manage use, storage, disposal, and protection of cryptographic keys used to protect organization data and communications.
an asset. 
|
Source: CMMC 
* CERT RMM v1.2
Asset Management (AM) 
|-
Management of organizational assets. This may include inventory, configuration,  destruction, disposal, and updates to organizational assets.
|Endorse
Source: CERT RMM v1.2 
|Declare one's public approval or support of.
Asset Owner (Information Asset Owner)
|
A person or organizational unit (internal or external to the organization) with primary  responsibility for the viability, productivity, security, and resilience of an organizational  asset. For example, the accounts payable department is the owner of the vendor database.
* Oxford Dictionary
Source: CERT RMM v1.2
|-
Asset Types 
|Enterprise
The following asset types should be included when classifying assets:
|An organization with a defined mission/goal and a defined boundary, using information systems to execute that mission, and with responsibility for managing its own risks and performance. An enterprise may consist of all or some of following business aspects: acquisition, program management, financial management (e.g., budgets), human resources, security, and information systems, information and mission management.
 People – employees, contractors, vendors, and external service provider personnel; 
|
 Technology – servers, client computers, mobile devices, network appliances (e.g., firewalls, 
* CNSSI 4009
switches, APs, and routers), VoIP devices, applications, virtual machines, and database  systems; 
|-
 Facilities – physical office locations, satellite offices, server rooms, datacenters, 
|Enterprise Architecture
manufacturing plants, and secured rooms; and 
|The description of an enterprise’s entire set of information systems: howThe y are configured, howThe y are integrated, howThe y interface to external environment at enterprise’s boundary, howThe y are operated to support enterprise mission, and howThe y contribute to enterprise’s overall security posture.
|
* CNSSI 4009
|-
|Environment
|See Glossary: Environment of Operations
|
|-
|Environment of Operations
|The physical and logical surroundings in which an information system processes, stores, and transmits information.
|
* NIST 800-53 Rev 5 (adapted)
|-
|Establish and Maintain
|Whenever “establish and maintain” (or “established and maintained”) is used as a phrase, it refers not only to development and maintenance of object of practice (such as a policy) but to documentation of object and observable usage of object. For example, “Formal agreements with external entities are established and maintained” means that not only are agreements formulated, butThe y also are documented, have assigned ownership, and are maintained relative to corrective actions, changes in requirements, or improvements.
|
* CERT RMM v1.2
|-
|Event
|Any observable occurrence in a system and/or network.Events sometimes provide indication that an incident is occurring.
See Glossary: Incident
|
* CNSSI 4009
|-
|Event Correlation
|Finding relationships between two or more events.
|
* NIST SP 800-92
|-
|Exercise
|A simulation of an emergency designed to validate viability of one or more aspects of an information technology plan.
|
* NIST SP 800-84
|}


== F ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Facility
|Physical means or equipment for facilitating performance of an action, e.g., buildings, instruments, tools.
|
* NIST SP 800-160
|-
|Federal Contract Information (FCI)
|Federal contract information means information, not intended for public release, that is provided by or generated for Government under a contract to develop or deliver a product or service to Government, but not including information provided by Government to public (such as on public websites) or simple transactional information, such as necessary to process payments.
|
* 48 CFR § 52.204-21
|-
|Federated Trust
|Trust established within a federation or organization, enabling each of mutually trusting realms to share and use trust information (e.g., credentials) obtained from any of other mutually trusting realms.This trust can be established across computer systems and networks architectures.
|
* NIST SP 800-95
|-
|Federation
|A collection of realms (domains) that have established trust amongThe mselves. level of trust may vary, but typically includes au ntication and may include authorization.
|
* NIST SP 800-95
|-
|Firewall
|A device or program that controls flow of network traffic between networks or hosts that employ differing security postures.
|
* NIST SP 800-41 Rev 1
|-
|Flash Drive
|A removable storage device that utilizes USB port of a system for data transfer.
|
* CMMC
|}


CMMC Glossary and Acronyms  Version 2.0 3   
== G ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Government Property
|All property owned or leased by Government. Government property includes both Government-furnished and Contractor-acquired property. Government property includes material, equipment, special tooling, special test equipment, and real property. Government property does not include intellectual property or software.
|
* FAR 52.245-1
|}


Glossary 
== H ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|High-Value Asset (HVA)
|Asset, organization information system, information, and data for which an unauthorized access, use, disclosure, disruption, modification, or destruction could cause a significant impact to organization’s interests, relations, economy, or to employee or stockholder confidence, civil liberties, or health and safety of organization’s people. An HVA may contain sensitive controls, instructions, data used in critical organization operations, or unique collections of data (by size or content), or support an organization’s mission essential functions, making it of specific value to criminal, politically motivated, or state sponsored actors for either direct exploitation or to cause a loss of confidence in organization.
|
* OMB M-17-09 (adapted)
|-
|High-Value Service
|Service on which success of organization’s mission depends.
|
* CERT RMM v.12
|}


 External  Service  Provider  (ESP) – external  people, technology, or facilities  that  the  organization  utilizes,  including  Cloud  Service  Providers,  Managed  Service  Providers,  Managed Security Service Providers, Cybersecurity-as-a-Service Providers. 
== I ==
Source: CMMC 
{|class="wikitable" style="width: 85%;"
Attack Surface 
! style="width: 15%"| Term
The set of points on the boundary of a system, a system element, or an environment where  an attacker can try to enter, cause an effect on, or extract data from.  
! style="width: 65%"| Description
Source: NIST SP 800-160 Vol. 2 
! style="width: 20%"| Source
Attribute-Based Access Control (ABAC)
|-
Access control based on attributes associated with and about subjects, objects, targets,  initiators, resources, or the environment. An access control rule set defines the combination  of attributes under which an access may take place.
|Identification
See Glossary: Identity, Credential, and Access Management (ICAM)
|The process of discovering true identity (i.e., origin, initial history) of a person or item from entire collection of similar persons or items.
Source: CNSSI 4009 
|
Availability 
* CNSSI 4009-2015
 Ensuring timely and reliable access to and use of information. 
* FIPS 201-1
 Timely, reliable access to data and information services for authorized users.
* NIST SP 800-79-2
Source: CNSSI 4009
|-
Audit 
|Identity
Independent review and examination of records and activities to assess the adequacy of system controls, to ensure compliance with established policies and operational procedures, and to recommend necessary changes in controls, policies, or procedures.
|The set of attribute values (i.e., characteristics) by which an entity is recognizable and that, within scope of an identity manager’s responsibility, is sufficient to distinguish that entity from any other entity.
Source: NIST SP 800-32 
Note: This also encompasses non-person entities (NPEs).
Audit Log 
|
A  chronological  record  of system activities. Includes  records  of system  accesses  and  operations performed in a given period.
* NIST SP 800-161
Source: CNSSI 4009 
* NISTIR 7622
Audit Record 
* CNSSI 4009
An individual entry in an audit log related to an audited event.
|-
Source: NIST SP 800-53 Rev
|Identity-Based Access Control (IBAC)
Authentication 
|Access control based on identity of user (typically relayed as a characteristic of process acting on behalf of that user) where access authorizations to specific objects are assigned based on user identity.
A security measure designed to protect a communications system against acceptance of fraudulent  transmission  or simulation  by  establishing  the  validity  of  a  transmission, message, originator, or a means of verifying an individual's eligibility to receive specific  categories of information.
|
Source: CNSSI 4005, NSA/CSS Manual Number 3-16 
* CERT RMM v1.2
|-
|Identity, Credential, and Access Management (ICAM)
|Programs, processes, technologies, and personnel used to create trusted digital identity representations of individuals and non-person entities (NPEs), bind those identities to credentials that may serve as a proxy for individual or NPE in access transactions, and leverage credentials to provide authorized access to an organization‘s resources.  
See Glossary: Attribute-Based Access Control (ABAC)
|
* CNSSI 4009 (adapted)
|-
|Identity Management System
|Identity management system comprised of one or more systems or applications that manages identity verification, validation, and issuance process.
|
* NISTIR 8149
|-
|Incident
|An occurrence that actually or potentially jeopardizes confidentiality, integrity, or availability of a system or information system processes, stores, or transmits or that constitutes a violation or imminent threat of violation of security policies, security procedures, or acceptable use policies.
|
* NIST SP 800-171 Rev 2
|-
|Incident Handling (Incident Response)
|The actions organization takes to prevent or contain impact of an incident to organization while it is occurring or shortly after it has occurred.
|
* CERT RMM v1.2
|-
|Incident Response (IR)
|See Glossary: Incident Handling
|
|-
|Incident Stakeholder
|A person or organization with a vested interest in management of an incident throughout its life cycle.
|
* CERT RMM v1.2
|-
|Industrial Control System (ICS)
|General term that encompasses several types of control systems, including supervisory control and data acquisition (SCADA) systems, distributed control systems (DCSs), and other control system configurations such as programmable logic controllers (PLCs) found in industrial sectors and critical infrastructures.An industrial control system consists of combinations of control components (e.g., electrical, mechanical, hydraulic, pneumatic) that act toge r to achieve an industrial objective (e.g., manufacturing, transportation of matter or energy).
|
* NIST SP 800-53 Rev 5
|-
|Industrial Internet of Things (IIoT)
|See Glossary: Internet of Things (IoT)
|
|-
|Information Asset Container
|See Glossary: Container
|
|-
|Information Asset Owner
|See Glossary: Asset Owner
|
|-
|Information Flow
|The flow of information or connectivity from one location to another. This can be related to data as well as connectivity from one system to another, or from one security domain to ano r. authorization granting permission for information flow comes from a control authority granting permission to an entity, asset, role, or group.
|
* CMMC
|-
|Information System (IS)
|A discrete set of information resources organized for The collection, processing, maintenance, use, sharing, dissemination, or disposition of information.
|
* NIST 800-171 Rev 2
|-
|Information System Component
|A discrete, identifiable information technology asset (e.g., hardware, software, firmware) that represents a building block of an information system, excluding separately authorized systems to which information system is connected. Information system components include commercial information technology products.
|
* CNSSI 4009-2015
* NIST SP 800-53 Rev 4 (adapted)
|-
|Insider
|Any person with authorized access to any organization or United States Government resource to include personnel, facilities, information, equipment, networks, or systems.
|
* CNSSD No. 504
|-
|Insider Threat
|The threat that an insider will use her/his authorized access, wittingly or unwittingly, to do harm to security of organization or United States. This threat can include damage to United States through espionage, terrorism, unauthorized disclosure, or through loss or degradation of departmental resources or capabilities.
|
* CNSSD No. 504 (adapted)
|-
|Insider Threat Program
|A coordinated collection of capabilities authorized by Department/Agency (D/A) that is organized to deter, detect, and mitigate unauthorized disclosure of sensitive information.
|
* CNSSD No. 504
|-
|Integrity
|The security objective that generates requirement for protection against ei r intentional or accidental attempts to violate data integrity (The property that data has not been altered in an unauthorized manner) or system integrity (The quality that a system has when it performs its intended function in an unimpaired manner, free from unauthorized manipulation).
|
* NIST SP 800-33
|-
|Internet of Things (IoT)
|Interconnected devices having physical or virtual representation in digital world, sensing/actuation capability, and programmability features.The y are uniquely identifiable and may include smart electric grids, lighting, heating, air conditioning, and fire and smoke detectors.
|
* iot.ieee.org/definition
* NIST SP 800-183
|-
|Inventory
|The physical or virtual verification of presence of each organizational asset.
|
* CNSSI 4005 (adapted)
|}


== L ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Least Privilege
|A security principle that restricts access privileges of authorized personnel (e.g., program execution privileges, file modification privileges) to minimum necessary to performThe ir jobs.
|
* NIST SP 800-57 Part 2
|-
|Life Cycle
|Evolution of a system, product, service, project, or other human-made entity from conception through retirement.
|
* NIST SP 800-161
|}


== M ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Maintenance
|Any act that ei r prevents failure or malfunction of equipment or restores its operating capability.
|
* NIST SP 800-82 Rev 2
|-
|Malicious Code
|Software or firmware intended to perform an unauthorized process that will have adverse impact on confidentiality, integrity, or availability of an information system. A virus, worm, Trojan horse, or other code-based entity that infects a host. Spyware and some forms of adware are also examples of malicious code.
|
* CNSSI 4009
|-
|Malware
|Software or firmware intended to perform an unauthorized process that will have adverse impact on confidentiality, integrity, or availability of an information system. A virus, worm, Trojan horse, or other code-based entity that infects a host. Spyware and some forms of adware are also examples of malicious code (malware).
|
* NIST SP 800-82 Rev 2
|-
|Maturity Model
|A maturity model is a set of characteristics, attributes, or indicators that represent progression in a particular domain. A maturity model allows an organization or industry to have its practices, processes, and methods evaluated against a clear set of requirements (such as activities or processes) that define specific maturity levels. At any given maturity level, an organization is expected to exhibit capabilities of that level. A tool that helps assess current effectiveness of an organization, and supports determining what capabilitiesThe y need in order to obtain next level of maturity in order to continue progression up levels of model.
|
* CERT RMM v1.2
|-
|Media
|Physical devices or writing surfaces including but not limited to, magnetic tapes, optical disks, magnetic disks, Large-Scale Integration (LSI) memory chips, printouts (but not including display media) onto which information is recorded, stored, or printed within an information system.
|
* FIPS 200
|-
|Media Sanitization
|The actions taken to render data written on media unrecoverable by both ordinary and extraordinary means.
|
* NIST SP 800-88 Rev 1
|-
|Mobile Code
|Software programs or parts of programs obtained from remote systems, transmitted across a network, and executed on a local system without explicit installation or execution by recipient.
Note: Some examples of software technologies that provide mechanisms for production and use of mobile code include Java, JavaScript, ActiveX, VBScript, etc.
|
* NIST SP 800-53 Rev 5
* NIST SP 800-18
* CNSSI 4009
|-
|Mobile Device
|A portable computing device that:
* has a small form factor such that it can easily be carried by a single individual;
* is designed to operate without a physical connection (e.g., wirelessly transmit or receive information);
* possesses local, non-removable data storage; and
* is powered on for extended periods of time with a self-contained power source.
Mobile devices may also include voice communication capabilities, on-board sensors that allow device to capture (e.g., photograph, video, record, or determine location) information, and/or built-in features for synchronizing local data with remote locations.Examples include smart phones, tablets, and e-readers.
Note: If device only has storage capability and is not capable of processing or transmitting/receiving information,The n it is considered a portable storage device, not a mobile device.
See Glossary: Portable Storage Device
Note: Laptops are excluded from scope of this definition (see NIST SP 800-124).
|
* NIST SP 800-53 Rev 5
|-
|Monitor
|The act of continually checking, supervising, critically observing, or determining status in order to identify change from performance level required or expected at an organizationally defined frequency and rate.
|
* NIST SP 800-160 (adapted)
|-
|Multifactor Authentication (MFA)
|An authentication system or an authenticator that requires more than one authentication factor for successful authentication. Multifactor authentication can be performed using a single authenticator that provides more than one factor or by a combination of authenticators that provide different factors.
The three authentication factors are something you know, something you have, and something you are.
See Glossary: Authenticator
|
* NIST SP 800-53 Rev 5
|}


== O ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Ongoing Basis
|Actions occurring, indefinitely. Actions that do not stop unless a stop action is purposely put in place.
|
* CMMC
|-
|Operational Resilience
|The ability of systems to resist, absorb, and recover from or adapt to an adverse occurrence during operation that may cause harm, destruction, or loss of ability to perform mission- related functions.
|
* CNSSI 4009
|-
|Operational Technology (OT)
|Hardware and software that detects or causes a change through direct monitoring and/or control of physical devices, processes and events in enterprise.
|
* DOE O 205.1C
* Department of Energy Cyber Security Program
|-
|Organization
|An entity of any size, complexity, or positioning within an organizational structure (e.g., a federal agency, or, as appropriate, any of its operational elements).
See Glossary: Enterprise
|
* NIST SP 800-37 Rev 1
|-
|Organization Seeking Certification (OSC)
|The entity that is going through CMMC assessment process to receive a level of certification for a given environment.
|
* CMMC
|-
|Organizational Asset
|See Glossary: Asset
|
* NISTIR 7693
* NISTIR 7694
|-
|Organizational System(s)
|The term organizational system is used in many of CUI security requirements in NIST Special Publication 800-171.This term has a specific meaning regarding scope of applicability for CUI security requirements. requirements apply only to components of nonfederal systems that process, store, or transmit CUI, or that provide security protection for such components. appropriate scoping for security requirements is an important factor in determining protection-related investment decisions and managing security risk for nonfederal organizations that have responsibility of safeguarding CUI.
|
* NIST SP 800-171 Rev 1
|-
|Organizationally Defined
|As determined by contractor being assessed. This can be applied to a frequency or rate at which something occurs within a given time period, or it could be associated with describing configuration of a contractor’s solution.
|
* CMMC
|-
|Out-of-Scope Asset
|Out-of-Scope Assets cannot process, store, or transmit CUI becauseThe y are physically or logically separated from CUI Assets or are inherently unable to do so.
|
* CMMC
|}


== P ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Patch
|An update to an operating system, application, or other software issued specifically to correct particular problems with software.
|
* NIST SP 800-123
|-
|Penetration Testing (Pentesting)
|Security testing in which evaluators mimic real-world attacks in an attempt to identify ways to circumvent security features of an application, system, or network. Penetration testing often involves issuing real attacks on real systems and data, using same tools and techniques used by actual attackers. Most penetration tests involve looking for combinations of vulnerabilities on a single system or multiple systems that can be used to gain more access than could be achieved through a single vulnerability.
|
* NIST SP 800-115
|-
|Periodically
|Occurring at regular intervals. As used in many practices within CMMC, interval length is organizationally defined to provided contractor flexibility, with an interval length of no more than one year.
|
* Oxford Dictionary (adapted)
|-
|Personally Identifiable Information (PII)
|Information that can be used to distinguish or trace an individual’s identity, ei r alone or when combined with other information that is linked or linkable to a specific individual.
|
* NIST SP 800-53 Rev 5
|-
|Plan
|An artifact or collection of artifacts that provides oversight for implementing defined CMMC policies. A plan should include a mission and/or vision statement, strategic goals/objectives, relevant standards and procedures, and people, funding, and tool resources needed to implement defined CMMC policies.
|
* CMMC
|-
|Policy
|An artifact or collection of artifacts that establishes governance over implementation of CMMC practices and activities. policy should include stated purpose, defined scope, roles and responsibilities of activities covered by policy, and any included regulatory guidelines. policy should establish or direct establishment of procedures to carry out and meet intent of policy and should be endorsed by senior management to show its support of policy.
|
* CMMC
|-
|Portable Storage Device
|A system component that can be inserted into and removed from a system, and that is used to store data or information (e.g., text, video, audio, and/or image data). Such components are typically implemented on magnetic, optical, or solid-state devices (e.g., floppy disks, compact/digital video disks, flash/thumb drives, external hard disk drives, and flash memory cards/drives that contain nonvolatile memory).
|
* NIST SP 800-171 Rev 2
|-
|Practice
|An activity or set of activities that are performed to meet defined CMMC objectives.
|
* CMMC
|-
|Privilege
|A right granted to an individual, a program, or a process.
|
* CNSSI 4009, NIST SP 800-12 Rev 1
|-
|Privileged Account
|A user, system, or network account authorized (and,The refore, trusted) to perform security- relevant functions that ordinary accounts are not authorized to perform.
|
* NIST SP 800-171 Rev. 2 (adapted)
|-
|Privileged User
|A user who is authorized (and,The refore, trusted) to perform security-relevant functions that ordinary users are not authorized to perform.
|
* NIST SP 800-171 Rev. 2
|-
|Procedure
|The documented details for how an activity is implemented to achieve a desired outcome.A procedure should provide enough detail for a trained individual to perform activity.
|
* CMMC
|-
|Process
|A procedural activity that is performed to implement a defined objective.
|
* CMMC
|-
|Proxy (Web Proxy)
|An application that “breaks” connection between client and server. proxy accepts certain types of traffic entering or leaving a network and processes it and forwards it.
Note: This effectively closes straight path between internal and external networks making it more difficult for an attacker to obtain internal addresses and other details of organization’s internal network. Proxy servers are available for common Internet services; for example, a hypertext transfer protocol (HTTP/HTTPS) proxy used for Web access.
|
* CNSSI 4009 (adapted)
|}


CMMC Glossary and Acronyms  Version 2.0 4   
== R ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Real Time, Real-Time (modifier)
|Pertaining to performance of a computation during actual time that related physical process transpires so that results of computation can be used to guide physical process.
|
* NIST SP 800-82 Rev. 2
* NISTIR 6859
|-
|Recovery
|Actions necessary to restore data files of an information system and computational capability after a system failure.
|
* CNSSI 4009
|-
|Red Team
|A group of people authorized and organized to emulate a potential adversary’s attack or exploitation capabilities against an enterprise’s security posture. Red Team’s objective is to improve enterprise Information Assurance by demonstrating impacts of successful attacks and by demonstrating what works for defenders (i.e., Blue Team) in an operational environment.
|
* CNSSI 4009
|-
|Red Teaming
|The act(s) performed by a “red team” in order to identify weaknesses, vulnerabilities, procedural shortcomings, and misconfigurations within an organization’s cyber environment. Red Teaming includes creation of a “Rules of Engagement” document by which red team honors over course of their actions. It is expected that Red Team will produce a final report at end of event period.
|
* CMMC
|-
|Regularly
|On a regular basis: at regular intervals.
|
* Oxford Dictionary
|-
|Remote Access
|Access to an organizational system by a user (or a process acting on behalf of a user) communicating through an external network (e.g., Internet).
|
* NIST SP 800-171 Rev. 2
|-
|Removable Media
|Portable data storage medium that can be added to or removed from a computing device or network.
Note: Examples include, but are not limited to: optical discs (CD, DVD, Blu-ray); external/removable hard drives; external/removable Solid-State Disk (SSD) drives; magnetic/optical tapes; flash memory devices (USB, eSATA, Flash Drive, Thumb Drive); flash memory cards (Secure Digital, CompactFlash, Memory Stick, MMC, xD); and other external/removable disks (floppy, Zip, Jaz, Bernoulli, UMD).
See Glossary: Portable Storage Device
|
* CNSSI 4009
|-
|Reporting [forensics]
|The final phase of computer and network forensic process, which involves reporting results of analysis; this may include describing actions used, explaining how tools and procedures were selected, determining what other actions need to be performed (e.g., forensic examination of additional data sources, securing identified vulnerabilities, improving existing security controls), and providing recommendations for improvement to policies, guidelines, procedures, tools, and other aspects of The forensic process.The formality of reporting step varies greatly depending on situation.
|
* NIST SP 800-86
|-
|Residual Risk
|Portion of risk remaining after security measures have been applied.
|
* NIST SP 800-33 (adapted)
|-
|Resilience
|The ability to prepare for and adapt to changing conditions and withstand and recover rapidly from disruptions. Resilience includes ability to withstand and recover from deliberate attacks, accidents, or naturally occurring threats or incidents.
|
* PPD 21
|-
|Restricted Information Systems
|Systems (and associated IT components comprising system) that are configured based on government requirements (i.e., connected to something that was required to support a functional requirement) and are used to support a contract (e.g., fielded systems, obsolete systems, and product deliverable replicas).
|
* CMMC
|-
|Risk
|A measure of extent to which an entity is threatened by a potential circumstance or event, and typically a function of:
* The adverse impacts that would arise if circumstance or event occurs and
* The likelihood of occurrence.
System-related security risks are those risks that arise from loss of confidentiality, integrity, or availability of information or systems. Such risks reflect potential adverse impacts to organizational operations, organizational assets, individuals, other organizations, and Nation.
|
* FIPS 200 (adapted)
|-
|Risk Analysis
|The process of identifying risks to system security and determining likelihood of occurrence, resulting impact, and additional safeguards that mitigate this impact.Part of risk management and synonymous with risk assessment.
|
* NIST SP 800-27
|-
|Risk Assessment
|
* The process of identifying risks to organizational operations (including mission, functions, image, reputation), organizational assets, individuals, other organizations, and Nation, resulting from operation of a system.
* Part of risk management, incorporates threat and vulnerability analyses, and considers mitigations provided by security controls planned or in place. Synonymous with risk analysis.
|
* NIST SP 800-171
|-
|Risk Management (RM)
|The program and supporting processes to manage information security risk to organizational operations (including mission, functions, image, reputation), organizational assets, individuals, other organizations, and Nation, and includes:
* establishing context for risk-related activities,
* assessing risk,
* responding to risk once determined, and
* monitoring risk over time.
|
* CNSSI 4009
|-
|Risk Mitigation
|Prioritizing, evaluating, and implementing The appropriate risk-reducing controls/ countermeasures recommended from risk management process.
|
* CNSSI 4009
|-
|Risk Mitigation Plan
|A strategy for mitigating risk that seeks to minimize risk to an acceptable level.
|
* CERT RMM v1.2
|-
|Risk Tolerance
|The level of risk an entity is willing to assume in order to achieve a potential desired result.
|
* CNSSI 4009
|-
|Root-Cause Analysis
|An approach for determining underlying causes of events or problems as a means of addressing symptoms of such events asThe y manifest in organizational disruptions.
|
* CERT RMM v1.2
|-
|Root Directory
|The top-level directory in a folder hierarchy.
|
* CMMC
|}


Glossary 
== S ==
Authenticator 
{|class="wikitable" style="width: 85%;"
Something that the claimant possesses and controls (typically a cryptographic module or password) that is used to authenticate the claimant’s identity. This was previously referred  to as a token.
! style="width: 15%"| Term
Source: NIST SP 800-53 Rev
! style="width: 65%"| Description
Authoritative Source (Trusted Source)
! style="width: 20%"| Source
An entity that has access to, or verified copies of, accurate information from an issuing source  such that a Credential Service Provider (CSP) can confirm the validity of the identity evidence  supplied  by an  applicant  during  identity  proofing. An  issuing  source  may  also  be  an  authoritative source. Often, authoritative sources are determined by a policy decision of the  agency or CSP before they can be used in the identity proofing validation phase.
|-
Source: NIST SP 800-63-
|Safeguards
Authorization 
|The protective measures prescribed to meet security requirements (i.e., confidentiality, integrity, and availability) specified for an information system. Safeguards may include security features, management constraints, personnel security, and security of physical structures, areas, and devices. Synonymous with security controls and countermeasures.
The right or a permission that is granted to a system entity (user, program, or process) to access a system resource.
|
Source: NIST SP 800-82 Rev 2 (adapted) 
* FIPS 200
Awareness 
|-
A learning process that sets the stage for training by changing individual and organizational  attitudes to realize the importance of security and the adverse consequences of its failure.
|Sandboxing
Source: NIST SP 800-16 
|A restricted, controlled execution environment that prevents potentially malicious software, such as mobile code, from accessing any system resources except those for which software is authorized.
Awareness and Training Program 
|
Explains proper rules of behavior for the use of agency information systems and information. The program communicates information technology (IT) security policies and procedures  that need to be followed. (i.e., NSTISSD 501, NIST SP 800-50).
* CNSSI 4009
Source: CNSSI 4009 
|-
Backup 
|Scanning
A copy of files and programs made to facilitate recovery, if necessary.
|Sending packets or requests to another system to gain knowledge about asset, processes, services, and operations.
Source: NIST SP 800-34, CNSSI 4009
|
Baseline 
* CNSSI 4009 (adapted)
Hardware, software, databases, and relevant documentation for an information system at a  given point in time.
|-
Source: CNSSI 4009
|Security Assessment
Baseline Configuration 
|See Glossary: Security Control Assessment
A set of specifications for a system, or Configuration Item (CI) within a system, that has been  formally reviewed and agreed on at a given point in time, and which can be changed only  through change control procedures. The baseline configuration is used as a basis for future  builds, releases, and/or changes.
|
Source: NIST SP 800-128  
|-
|Security Control Assessment (Security Assessment, Security Practice Assessment)
|The testing or evaluation of security controls to determine extent to which controls are implemented correctly, operating as intended, and producing desired outcome with respect to meeting security requirements for a system or organization.
|
* CNSSI 4009 (adapted)
|-
|Security Domain
|An environment or context that includes a set of system resources and a set of system entities that have right to access resources as defined by a common security policy, security model, or security architecture.
|
* CNSSI 4009
|-
|Security Operations Center (SOC)
|A centralized function within an organization utilizing people, processes, and technologies to continuously monitor and improve an organization's security posture while preventing, detecting, analyzing, and responding to cybersecurity incidents.
|
* CMMC
|-
|Security Policy
|Security policies define objectives and constraints for security program. Policies are created at several levels, ranging from organization or corporate policy to specific operational constraints (e.g., remote access). In general, policies provide answers to questions “what” and “why” without dealing with “how.” Policies are normally stated in terms that are technology-independent.
|
* NIST SP 800-82 Rev 2
|-
|Security Protection Assets
|Security provide security functions or capabilities within contractor’s CMMC Assessment Scope.
|
* CMMC
|-
|Security Practice Assessment
|See Glossary: Security Control Assessment
|
|-
|Sensitive Information
|Information where loss, misuse, or unauthorized access or modification could adversely affect national interest or conduct of federal programs, or privacy to which individuals are entitled under 5 U.S.C. Section 552a (The Privacy Act).
|
* NIST SP 800-53 Rev 4 (adapted)
|-
|Separation of Duties
|Refers to principle that no user should be given enough privileges to misuse system onThe ir own. For example, person authorizing a paycheck should not also be one who can prepareThe m.Separation of duties can be enforced ei r statically (by defining conflicting roles, i.e., roles which cannot be executed by same user) or dynamically (by enforcing control at access time).
|
* NIST SP 800-192
|-
|Service Continuity Plan
|A service-specific plan for sustaining services and associated assets under degraded conditions.
|
* CERT RMM v1.2
|-
|SHA-256
|A Secure Hash Algorithm (SHA) that produces a condensed representation of electronic data, or message digest, 256 bits in length.
|
* FIPS 180-4
|-
|Situational Awareness (SA)
|Within a volume of time and space, perception of an enterprise’s security posture and its threat environment; comprehension/meaning of both taken toge r (risk); and projection ofThe ir status into near future.
|
* CNSSI 4009
|-
|Specialized Asset
|The following are considered specialized assets for CMMC: Government Property, Internet of Things (IoT) or Industrial Internet of Things (IIoT), Operational Technology (OT), and Restricted Information Systems.
|
* CMMC
|-
|Split Tunneling
|The process of allowing a remote user or device to establish a non-remote connection with a system and simultaneously communicate via some other connection to a resource in an external network. This method of network access enables a user to access remote devices (e.g., a networked printer) at same time as accessing uncontrolled networks.
|
* NIST SP 800-171
|-
|Spyware
|Software that is secretly or surreptitiously installed into an information system to ga r information on individuals or organizations withoutThe ir knowledge; a type of malicious code.
|
* NIST SP 800-53 Rev 5
|-
|Standards
|A document, established by consensus and approved by a recognized body, that provides for common and repeated use, rules, guidelines or characteristics for activities or their results, aimed at achievement of optimum degree of order in a given context.
Note: Standards should be based on consolidated results of science, technology and experience, and aimed at promotion of optimum community benefits.
|
* NISTIR 8074 Vol. 2
|-
|Standard Process
|An operational definition of basic process that guides establishment of a common process in an organization. A standard process describes fundamental process elements that are expected to be incorporated into any defined process. It also describes relationships (e.g., ordering, interfaces) amongThe se process elements.
See Glossary: Defined Process
|
* CERT RMM v1.2
|-
|Subnetwork
|A subordinate part of an organization’s enterprise network.
|
* CMMC
|-
|Supply Chain
|A system of organizations, people, activities, information, and resources, possibly international in scope, that provides products or services to consumers.
|
* CNSSI 4009
|-
|Supply Chain Attack
|Attacks that allow adversary to utilize implants or other vulnerabilities inserted prior to installation in order to infiltrate data, or manipulate information technology hardware, software, operating systems, peripherals (information technology products) or services at any point during life cycle.
|
* CNSSI 4009
|-
|Supply Chain Risk Management (SCRM)
|A systematic process for managing supply chain risk by identifying susceptibilities, vulnerabilities, and threats throughout supply chain and developing mitigation strategies to combat those threats whe r presented by supplier, supplied product and its subcomponents, or supply chain (e.g., initial production, packaging, handling, storage, transport, mission operation, and disposal).
|
* CNSSD No. 505
|-
|Sustain
|Maintain a desired operational state.
|
* CERT RMM v1.2
|-
|System Assets
|Any software, hardware (IT, OT, IoT), data, administrative, physical, communications, or personnel resource within an information system.
|
* CNSSI 4009
|-
|System Boundary
|The scope of system and environment being assessed. All components of an information system to be authorized for operation by an authorizing official and excludes separately authorized systems, to which information system is connected. System Boundary is equivalent to defined CMMC Assessment Scope.
See Glossary: CMMC Assessment Scope
|
* CNSSI 4009-2015 under authorization boundary NIST SP 800-53 Rev. 4
* NIST SP 800-53A Rev. 1
* NIST SP 800-37 Rev. 1
|-
|System Integrity
|The quality that a system has when it performs its intended function in an unimpaired manner, free from unauthorized manipulation of system, whe r intentional or accidental.
|
* NIST SP 800-27
|-
|System Interconnection
|A system interconnection is defined as direct connection of two or more IT systems for purpose of sharing data and other information resources.
|
* NIST 800-47
|-
|System Security Plan (SSP)
|The formal document prepared by information system owner (or common security controlsThe ownerThe forThe inheritedThe controls)The thatThe providesThe anThe overviewThe ofThe security requirements for system and describes security controls in place or planned for meeting those requirements. plan can also contain as supporting appendices or as references, other key security-related documents such as a risk assessment, privacy impact assessment, system interconnection agreements, contingency plan, security configurations, configuration management plan, and incident response plan.
|
* CNSSI 4009
|}


== T ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Tampering
|An intentional but unauthorized act resulting in modification of a system, components of systems, its intended behavior, or data.
|
* NIST SP 800-53 Rev 5
|-
|Test Equipment
|Hardware and/or associated IT components used in testing of products, system components, and contract deliverables (e.g., oscilloscopes, spectrum analyzers, power meters, and special test equipment).
|
* CMMC
|-
|Threat
|Any circumstance or event with potential to adversely impact organizational operations (including mission, functions, image, or reputation), organizational assets, individuals, other organizations, or Nation through an information system via unauthorized access, destruction, disclosure, modification of information, and/or denial of service.
|
* NIST SP 800-30 Rev 1
|-
|Threat Actor
|An individual or a group posing a threat.
|
* NIST SP 800-150
|-
|Threat Intelligence
|Threat information that has been aggregated, transformed, analyzed, interpreted, or enriched to provide necessary context for decision-making processes.
|
* NIST SP 800-150
|-
|Threat Monitoring
|Analysis, assessment, and review of audit trails and other information collected for purpose of searching out system events that may constitute violations of system security.
|
* CNSSI 4009
|-
|Trigger
|A set of logic statements to be applied to a data stream that produces an event when an anomalous incident or behavior occurs.
|
* CNSSD No. 504 (adapted)
|-
|Trojan Horse
|A computer program that appears to have a useful function, but also has a hidden and potentially malicious function that evades security mechanisms, sometimes by exploiting legitimate authorizations of a system entity that invokes program.
|
* CNSSI 4009
|-
|Tunneling
|Technology enabling one network to send its data via another network’s connections.Tunneling works by encapsulating a network protocol within packets carried by second network.
|
* CNSSI 4009
|}




CMMC Glossary and Acronyms  Version 2.0 5
== U ==
{|class="wikitable" style="width: 85%;"
! style="width: 15%"| Term
! style="width: 65%"| Description
! style="width: 20%"| Source
|-
|Unauthorized Access
|Any access that violates stated security policy.
|
* CNSSI 4009
|-
|User
|Individual, or (system) process acting on behalf of an individual, authorized to access a system.
|
* NIST SP 800-53 Rev 5
|}


Glossary 
== V ==
Baseline Security 
{|class="wikitable" style="width: 85%;"
The  minimum  security  controls  required  for  safeguarding  an  IT  system  based  on its  identified needs for confidentiality, integrity, and/or availability protection.
! style="width: 15%"| Term
Source: NIST SP 800-16 
! style="width: 65%"| Description
Baselining 
! style="width: 20%"| Source
Monitoring resources to determine typical utilization patterns so that significant deviations  can be detected. 
|-
Source: NIST SP 800-61 
|Virus
Blacklist 
|A computer program that can copy itself and infect a computer without permission or knowledge of user. A virus might corrupt or delete data on a computer, use e-mail programs to spread itself to other computers, or even erase everything on a hard disk.  
A list of discrete entities, such as IP addresses, host names, applications, software libraries,  and so forth that have been previously determined to be associated with malicious activity  thus requiring access or execution restrictions.
See Glossary: Malicious Code
Source: NIST SP 800-114 (adapted), NIST SP 800-94 (adapted), CNSSI 4009 (adapted)  Blacklisting Software 
|
A list of applications (software) and software libraries that are forbidden to execute on an  organizational asset. 
* CNSSI 4009
Source: NIST SP 800-94 (adapted) 
|-
Blue Team 
|Vulnerability
 The group responsible for defending an organization’s use of information systems by 
|Weakness in an information system, system security procedures, internal controls, or implementation that could be exploited by a threat source.
maintaining its security posture against a group of mock attackers (i.e., the Red Team). Typically, the Blue  Team and its supporters must defend against  real or simulated  attacks: 
|
—  over a significant period of time; 
* NIST SP 800-30 Rev 1
—  in a representative operational context (e.g., as part of an operational exercise); and 
|-
—  according  to  rules  established  and  monitored  with  the  help  of  a  neutral  group 
|Vulnerability Assessment
refereeing the simulation or exercise (i.e., the White Team)
|Systematic examination of an information system or product to determine adequacy of security measures, identify security deficiencies, provide data from which to predict effectiveness of proposed security measures, and confirm adequacy of such measures after implementation.
 The  term  Blue  Team  is  also  used  for  defining  a  group  of  individuals  who  conduct 
|
operational  network  vulnerability  evaluations  and  provide  mitigation  techniques  to  customers  who  have  a  need  for  an  independent  technical  review  of  their  network  security posture. The Blue Team identifies security threats and risks in the operating  environment, and in cooperation with the customer, analyzes the network environment  and its current state of security readiness. Based on the Blue Team findings and expertise,  they  provide  recommendations  that integrate  into  an  overall  community  security  solution to increase the customer's cyber security readiness posture. Often, a Blue Team  is employed by itself or prior to a Red Team employment to ensure that the customer's  networks are as secure as possible before having the Red Team test the systems.
* CNSSI 4009
Source: CNSSI 4009 (adapted) 
|-
|Vulnerability Management
|An Information Security Continuous Monitoring (ISCM) capability that identifies vulnerabilities [Common Vulnerabilities and Exposures (CVEs)] on devices that are likely to be used by attackers to compromise a device and use it as a platform from which to extend compromise to network.
|
* NISTIR 8011 Vol. 1
|}


 
== W ==
 
{|class="wikitable" style="width: 85%;"
 
! style="width: 15%"| Term
CMMC Glossary and Acronyms  Version 2.0 6   
! style="width: 65%"| Description
 
! style="width: 20%"| Source
Glossary 
|-
Breach 
|Web Proxy
An incident where an adversary has gained access to the internal network of an organization  or an organizationally owned asset in a manner that breaks the organizational policy for  accessing cyber assets and results in the loss of information, data, or asset. A breach usually  consists of the loss of an asset due to the gained access. 
|See Glossary: Proxy
Source: CMMC 
Change Control (Change Management) 
The process of regulating and approving changes to hardware, firmware, software, and  documentation throughout the development and operational life cycle of an information  system. 
Source: NIST SP 800-128, CNSSI 4009 
Change Management 
See Glossary: Change Control 
Cipher 
 Any cryptographic system in which arbitrary symbols or groups of symbols, represent 
units of plain text, or in which units of plain text are rearranged, or both. 
 A series of transformations that converts plaintext to ciphertext using the Cipher Key. 
Source: FIPS 197 
Ciphertext 
A term that describes data in its encrypted form. 
Source: NIST SP 800-57 Part 1 Rev 3 
CMMC Assessment Scope 
Includes all assets in the contractor’s environment that will be assessed. 
Source: CMMC 
CMMC Asset Categories 
CMMC defined five asset categories for scoping activities: CUI Assets, Security Protection  Assets, Contractor Risk Managed Assets, Specialized Assets, and Out-of-Scope Asset. Asset  categories determine: assessment, segmentation, documentation, and management of  assets. 
Source: CMMC 
Compliance 
Conformity in fulfilling official requirements. 
Source: Merriam-Webster 
Component 
A discrete identifiable information technology asset that represents a building block of a  system and may include hardware, software, and firmware. 
Source: NIST SP 800-171 Rev. 2 under system component NIST SP 800-128 
 
 
CMMC Glossary and Acronyms  Version 2.0 7   
 
Glossary 
Confidentiality 
Preserving authorized restrictions on access and disclosure, including means for protecting  personal privacy and proprietary information. 
Source: 44 U.S.C. 3542 
Configuration Item (CI) 
An aggregation of system components that is designated for configuration management and  treated as a single entity in the configuration management process. 
Source: NIST SP 800-53 Rev 5 
Configuration Management (CM) 
A collection of activities focused on establishing and maintaining the integrity of information  technology products and systems, through control of processes for initializing, changing, and  monitoring  the  configurations  of  those  products  and  systems  throughout  the  system  development life cycle. 
Source: NIST SP 800-53 Rev 5 
Consequence 
Effect (change or non-change), usually associated with an event or condition or with the  system and usually allowed, facilitated, caused, prevented, changed, or contributed to by the  event, condition, or system. 
Source: NIST SP 800-160 
Container (Information Asset Container) 
A  physical  or  logical  location  where  assets  are  stored,  transported,  and  processed.  A  container  can  encompass  technical  containers  (servers,  network  segments,  personal  computers), physical containers (paper, file rooms, storage spaces, or other media such as  CDs,  disks,  and  flash  drives),  and  people  (including  people  who  might  have  detailed  knowledge about the information asset). 
Source: CERT RMM v1.2 
Context Aware 
The ability of a system or a system component to gather information about its environment  at any given time and adapt behaviors accordingly. Contextual or context-aware computing  uses software and hardware to automatically collect and analyze data to guide responses. 
Source: CMMC 
Continuity of Operations 
An organization’s ability to sustain assets and services in response to a disruptive event. It 
is typically used interchangeably with service continuity or continuity of service. 
Source: CERT RMM v1.2 (adapted) 
Consequence 
Effect (change or non-change), usually associated with an event or condition or with the  system and usually allowed, facilitated, caused, prevented, changed, or contributed to by the  event, condition, or system. 
Source: NIST SP 800-160 
 
CMMC Glossary and Acronyms  Version 2.0 8   
 
Glossary 
Continuous 
Continuing without stopping; ongoing. 
Source: Merriam-Webster (adapted) 
Continuous Monitoring 
Maintaining  ongoing  awareness  to  support  organizational  risk  decisions.  Maintaining  ongoing  awareness  of  information  security,  vulnerabilities,  and  threats  to  support  organizational risk management decisions. 
Source(s): CNSSI 4009-2015, NIST SP 800-137, NIST SP 800-150 
Contractor Risk Managed Assets 
Contractor Risk Managed Assets are capable of, but are not intended to, process, store, or  transmit CUI because of the security policy, procedures, and practices in place. 
Source: CMMC 
Control 
The methods, policies, and procedures—manual or automated—used by an organization to  safeguard and protect assets, promote efficiency, or adhere to standards. A measure that is  modifying risk. 
Note: controls include any process, policy, device, practice, or other actions which modify risk. 
Source: NISTIR 8053 (adapted) 
Controlled Unclassified Information (CUI) 
Information that requires safeguarding or dissemination controls pursuant to and consistent  with  laws,  regulations,  and  government-wide  policies,  excluding  information  that  is  classified under Executive Order 13526, Classified National Security Information, December  29, 2009, or any predecessor or successor order, or Atomic Energy Act of 1954, as amended. 
Source: NIST SP 800-171 Rev 2 
Covered Defense Information (CDI) 
A term used to identify information that requires protection under DFARS Clause 252.204-
7012. Unclassified controlled technical information (CTI) or other information, as described  in the CUI Registry, that requires safeguarding or dissemination controls pursuant to and  consistent with law, regulations, and Government wide policies and is:
 Marked or otherwise identified in the contract, task order, or delivery order and provided 
to contractor by or on behalf of, DoD in support of the performance of the contract; OR 
 Collected, developed, received, transmitted, used, or stored by—or on behalf of—the 
contractor in support of the performance of the contract. 
Source: DFARS Clause 252.204-7012 
Cryptographic Hashing Function 
The process of using a mathematical algorithm against data to produce a numeric value that  is representative of that data. 
Source: CNSSI 4009 
 
 
CMMC Glossary and Acronyms  Version 2.0 9   
 
Glossary 
CUI Assets 
Assets that process, store, or transmit CUI. 
Source: CMMC 
Custodian 
See Glossary: Asset Custodian 
Cybersecurity 
Prevention of damage to, protection of, and restoration of computers, electronic  communications systems, electronic communications services, wire communication, and  electronic communication, including information contained therein, to ensure its  availability, integrity, authentication, confidentiality, and nonrepudiation. 
Source: NSPD-54/HSPD-23 
Defense Industrial Base (DIB) 
The worldwide industrial complex that enables research and development, as well as design,  production,  delivery,  and  maintenance  of  military  weapons  systems,  subsystems,  and  components or parts, to meet U.S. military requirements. 
Source: DIB Sector-Specific Plan, DHS CISA 
Dependency 
When an entity has access to, control of, ownership in, possession of, responsibility for, or  other defined obligations related to one or more assets or services of the organization. 
Source: CERT RMM v1.2 (adapted) 
Demilitarized Zone (DMZ) 
A perimeter network segment that is logically between internal and external networks. Its  purpose is to enforce the internal network’s Information Assurance (IA) policy for external  information exchange and to provide external, untrusted sources with restricted access to  releasable information while shielding the internal networks from outside attacks. 
Source: CNSSI 4009 
Domain 
Grouping of like practices based on the 14 control families set forth in NIST SP 800-171. 
Source: CMMC 
Encryption 
The process of changing plaintext into cipher text. 
Source: NISTIR 7621 Rev 1, CNSSI 4009 
Encryption Policies 
Policies that manage the use, storage, disposal, and protection of cryptographic keys used to  protect organization data and communications. 
Source: CERT RMM v1.2 
Endorse 
Declare one's public approval or support of. 
 
 
CMMC Glossary and Acronyms  Version 2.0 10   
 
Glossary 
 
Source: Oxford Dictionary 
Enterprise 
An organization with a defined mission/goal and a defined boundary, using information  systems to execute that mission, and with responsibility for managing its own risks and  performance. An enterprise may consist of all or some of the following business aspects:  acquisition, program management, financial management (e.g., budgets), human resources,  security, and information systems, information and mission management. 
Source: CNSSI 4009 
Enterprise Architecture 
The  description  of  an  enterprise’s  entire  set  of  information  systems:  how  they  are  configured, how they are integrated, how they interface to the external environment at the  enterprise’s boundary, how they are operated to support the enterprise mission, and how  they contribute to the enterprise’s overall security posture. 
Source: CNSSI 4009 
Environment 
See Glossary: Environment of Operations 
Environment of Operations 
The physical and logical surroundings in which an information system processes, stores, and  transmits information. 
Source: NIST 800-53 Rev 5 (adapted) 
Establish and Maintain 
Whenever “establish and maintain” (or “established and maintained”) is used as a phrase, it  refers not only to the development and maintenance of the object of the practice (such as a  policy) but to the documentation of the object and observable usage of the object. For  example, “Formal agreements with external entities are established and maintained” means  that not only are the agreements formulated, but they also are documented, have assigned  ownership, and are maintained relative to corrective actions, changes in requirements, or  improvements. 
Source: CERT RMM v1.2 
Event 
Any  observable  occurrence  in  a  system  and/or  network.  Events  sometimes  provide  indication that an incident is occurring. 
See Glossary: Incident 
Source: CNSSI 4009 
Event Correlation 
Finding relationships between two or more events. 
Source: NIST SP 800-92 
Exercise 
A simulation of an emergency designed to validate the viability of one or more aspects of an  information technology plan. 
 
CMMC Glossary and Acronyms  Version 2.0 11   
 
Glossary 
 
Source: NIST SP 800-84 
Facility 
Physical means or equipment for facilitating the performance of an action, e.g., buildings,  instruments, tools. 
Source: NIST SP 800-160 
Federal Contract Information (FCI) 
Federal contract information means information, not intended for public release, that is  provided by or generated for the Government under a contract to develop or deliver a  product  or  service  to  the  Government,  but  not  including  information  provided  by  the  Government to the public (such as on public websites) or simple transactional information,  such as necessary to process payments. 
Source: 48 CFR § 52.204-21 
Federated Trust 
Trust established within a federation or organization, enabling each of the mutually trusting  realms to share and use trust information (e.g., credentials) obtained from any of the other  mutually  trusting  realms.  This  trust  can  be  established  across  computer  systems  and  networks architectures. 
Source: NIST SP 800-95 
Federation 
A collection of realms (domains) that have established trust among themselves. The level of  trust may vary, but typically includes authentication and may include authorization. 
Source: NIST SP 800-95 
Firewall 
A device or program that controls the flow of network traffic between networks or hosts that  employ differing security postures. 
Source: NIST SP 800-41 Rev 1 
Flash Drive 
A removable storage device that utilizes the USB port of a system for data transfer. 
Source: CMMC 
Government Property 
All property owned  or leased by the Government. Government property includes both  Government-furnished and Contractor-acquired property. Government property includes  material, equipment, special tooling, special test equipment, and real property. Government  property does not include intellectual property or software. 
Source: FAR 52.245-1 
High-Value Asset (HVA) 
Asset, organization information system, information, and data for which an unauthorized  access, use, disclosure, disruption, modification, or destruction could cause a significant  impact to the organization’s interests, relations, economy, or to the employee or stockholder  confidence, civil liberties, or health and safety of the organization’s people. An HVA may 
 
CMMC Glossary and Acronyms  Version 2.0 12   
 
Glossary 
 
contain sensitive controls, instructions, data used in critical organization operations, or  unique collections of data (by size or content), or support an organization’s mission essential  functions, making it of specific value to criminal, politically motivated, or state sponsored  actors for either direct exploitation or to cause a loss of confidence in the organization. 
Source: OMB M-17-09 (adapted) 
High-Value Service 
Service on which the success of the organization’s mission depends. 
Source: CERT RMM v.12 
Identification 
The process of discovering the true identity (i.e., origin, initial history) of a person or item  from the entire collection of similar persons or items. 
Source: CNSSI 4009-2015, FIPS 201-1, NIST SP 800-79-2 
Identity 
The set of attribute values (i.e., characteristics) by which an entity is recognizable and that,  within the scope of an identity manager’s responsibility, is sufficient to distinguish that entity  from any other entity. 
Note: This also encompasses non-person entities (NPEs). 
Source: NIST SP 800-161, NISTIR 7622, CNSSI 4009 
Identity-Based Access Control (IBAC) 
Access control based on the identity of the user (typically relayed as a characteristic of the  process acting on behalf of that user) where access authorizations to specific objects are  assigned based on user identity. 
Source: CERT RMM v1.2 
Identity, Credential, and Access Management (ICAM) 
Programs, processes, technologies, and personnel used to create trusted digital identity  representations  of  individuals  and  non-person  entities  (NPEs),  bind  those  identities  to  credentials that may serve as a proxy for the individual or NPE in access transactions, and  leverage the credentials to provide authorized access to an organization‘s resources. 
See Glossary: Attribute-Based Access Control (ABAC) 
Source: CNSSI 4009 (adapted) 
Identity Management System 
Identity  management  system  comprised  of  one  or  more  systems  or  applications  that  manages the identity verification, validation, and issuance process. 
Source: NISTIR 8149 
Incident 
An  occurrence  that  actually  or  potentially  jeopardizes  the  confidentiality,  integrity,  or  availability of a system or the information the system processes, stores, or transmits or that  constitutes  a  violation  or  imminent  threat  of  violation  of  security  policies,  security  procedures, or acceptable use policies. 
Source: NIST SP 800-171 Rev 2 
 
CMMC Glossary and Acronyms  Version 2.0 13   
 
Glossary 
Incident Handling (Incident Response) 
The actions the organization takes to prevent or contain the impact of an incident to the  organization while it is occurring or shortly after it has occurred 
Source: CERT RMM v1.2 
Incident Response (IR) 
See Glossary: Incident Handling 
Incident Stakeholder 
A person or organization with a vested interest in the management of an incident throughout  its life cycle. 
Source: CERT RMM v1.2 
Industrial Control System (ICS) 
General term that encompasses several types of control systems, including supervisory  control and data acquisition (SCADA) systems, distributed control systems (DCSs), and other  control system configurations such as programmable logic controllers (PLCs) found in the  industrial  sectors  and  critical  infrastructures.  An  industrial  control  system  consists  of  combinations of control components (e.g., electrical, mechanical, hydraulic, pneumatic) that  act together to achieve an industrial objective (e.g., manufacturing, transportation of matter  or energy). 
Source: NIST SP 800-53 Rev 5 
Industrial Internet of Things (IIoT) 
See Glossary: Internet of Things (IoT) 
Information Asset Container 
See Glossary: Container 
Information Asset Owner 
See Glossary: Asset Owner 
Information Flow 
The flow of information or connectivity from one location to another. This can be related to  data as well as connectivity from one system to another, or from one security domain to  another. The authorization granting permission for information flow comes from a control  authority granting permission to an entity, asset, role, or group. 
Source: CMMC 
Information System (IS) 
A discrete set of information resources organized for the collection, processing,  maintenance, use, sharing, dissemination, or disposition of information. 
Source: NIST 800-171 Rev 2 
Information System Component 
A discrete, identifiable information technology asset (e.g., hardware, software, firmware)  that represents a building block of an information system, excluding separately authorized 
 
 
CMMC Glossary and Acronyms  Version 2.0 14   
 
Glossary 
 
systems to which the information system is connected. Information system components  include commercial information technology products. 
Source: CNSSI 4009-2015, NIST SP 800-53 Rev 4 (adapted) 
Insider 
Any  person  with  authorized  access  to  any  organization  or  United  States  Government  resource to include personnel, facilities, information, equipment, networks, or systems. 
Source: CNSSD No. 504 
Insider Threat 
The threat that an insider will use her/his authorized access, wittingly or unwittingly, to do  harm to the security of the organization or the United States. This threat can include damage  to the United States through espionage, terrorism, unauthorized disclosure, or through the  loss or degradation of departmental resources or capabilities. 
Source: CNSSD No. 504 (adapted) 
Insider Threat Program 
A coordinated collection of capabilities authorized by the Department/Agency (D/A) that is  organized to deter, detect, and mitigate the unauthorized disclosure of sensitive information. 
Source: CNSSD No. 504 
Integrity 
The  security  objective  that  generates  the  requirement  for  protection  against  either  intentional or accidental attempts to violate data integrity (the property that data has not  been altered in an unauthorized manner) or system integrity (the quality that a system has  when it performs its intended function in an unimpaired manner, free from unauthorized  manipulation). 
Source: NIST SP 800-33 
Internet of Things (IoT) 
Interconnected devices having physical or virtual representation in the digital world,  sensing/actuation capability, and programmability features. They are uniquely identifiable  and may include smart electric grids, lighting, heating, air conditioning, and fire and smoke  detectors. 
Source: iot.ieee.org/definition; NIST SP 800-183 
Inventory 
The physical or virtual verification of the presence of each organizational asset. 
Source: CNSSI 4005 (adapted) 
Least Privilege 
A security principle that restricts the access privileges of authorized personnel (e.g., program  execution privileges, file modification privileges) to the minimum necessary to perform their  jobs. 
Source: NIST SP 800-57 Part 2 
 
 
 
CMMC Glossary and Acronyms  Version 2.0 15
 
Glossary 
Life Cycle 
Evolution of a system, product, service, project, or other human-made entity from conception  through retirement. 
Source: NIST SP 800-161 
Maintenance 
Any act that either prevents the failure or malfunction of equipment or restores its operating  capability. 
Source: NIST SP 800-82 Rev 2 
Malicious Code 
Software or firmware intended to perform an unauthorized process that will have adverse  impact on the confidentiality, integrity, or availability of an information system. A virus,  worm, Trojan horse, or other code-based entity that infects a host. Spyware and some forms  of adware are also examples of malicious code. 
Source: CNSSI 4009 
Malware 
Software or firmware intended to perform an unauthorized process that will have adverse  impact on the confidentiality, integrity, or availability of an information system. A virus,  worm, Trojan horse, or other code-based entity that infects a host. Spyware and some forms  of adware are also examples of malicious code (malware). 
Source: NIST SP 800-82 Rev 2 
Maturity Model 
A  maturity  model  is  a  set  of  characteristics,  attributes,  or  indicators  that  represent  progression in a particular domain. A maturity model allows an organization or industry to  have its practices, processes, and methods evaluated against a clear set of requirements  (such as activities or processes) that define specific maturity levels. At any given maturity  level, an organization is expected to exhibit the capabilities of that level. A tool that helps  assess  the  current  effectiveness  of  an  organization,  and  supports  determining  what  capabilities they need in order to obtain the next level of maturity in order to continue  progression up the levels of the model. 
Source: CERT RMM v1.2 
Media 
Physical devices or writing surfaces including but not limited to, magnetic tapes, optical  disks,  magnetic  disks,  Large-Scale  Integration  (LSI)  memory  chips,  printouts  (but  not  including display media) onto which information is recorded, stored, or printed within an  information system. 
Source: FIPS 200 
Media Sanitization 
The actions taken to render data written on media unrecoverable by both ordinary and  extraordinary means. 
Source: NIST SP 800-88 Rev 1 
 
 
CMMC Glossary and Acronyms  Version 2.0 16   
 
Glossary 
Mobile Code 
Software programs or parts of programs obtained from remote systems, transmitted across  a network, and executed on a local system without explicit installation or execution by the  recipient. 
Note: Some  examples  of  software  technologies  that  provide  the  mechanisms  for  the  production and use of mobile code include Java, JavaScript, ActiveX, VBScript, etc. 
Source: NIST SP 800-53 Rev 5, NIST SP 800-18, CNSSI 4009 
Mobile Device 
A portable computing device that: 
 has a small form factor such that it can easily be carried by a single individual; 
 is designed to operate without a physical connection (e.g., wirelessly transmit or receive 
information); 
 possesses local, non-removable data storage; and 
 is powered on for extended periods of time with a self-contained power source. 
Mobile devices may also include voice communication capabilities, on-board sensors that  allow  the  device  to  capture  (e.g.,  photograph,  video,  record,  or  determine  location)  information, and/or built-in features for synchronizing local data with remote locations.  Examples include smart phones, tablets, and e-readers. 
Note:  If  the  device  only  has  storage  capability  and  is  not  capable  of  processing  or 
transmitting/receiving information, then it is considered a portable storage device,  not a mobile device. 
See Glossary: Portable Storage Device 
Note: Laptops are excluded from the scope of this definition (see NIST SP 800-124). 
Source: NIST SP 800-53 Rev 5 
Monitor 
The act of continually checking, supervising, critically observing, or determining the status  in  order  to  identify  change  from  the  performance  level  required  or  expected  at  an  organizationally defined frequency and rate. 
Source: NIST SP 800-160 (adapted) 
Multifactor Authentication (MFA) 
An authentication system or an authenticator that requires more than one authentication  factor for successful authentication. Multifactor authentication can be performed using a  single  authenticator  that  provides  more  than  one  factor  or  by  a  combination  of  authenticators that provide different factors. 
The  three  authentication  factors  are  something  you  know,  something  you  have,  and  something you are. 
See Glossary: Authenticator 
Source: NIST SP 800-53 Rev 5 
Ongoing Basis 
Actions occurring, indefinitely. Actions that do not stop unless a stop action is purposely put  in place. 
 
 
CMMC Glossary and Acronyms  Version 2.0 17   
 
Glossary 
 
Source: CMMC 
Operational Resilience 
The ability of systems to resist, absorb, and recover from or adapt to an adverse occurrence  during operation that may cause harm, destruction, or loss of ability to perform mission- related functions. 
Source: CNSSI 4009 
Operational Technology (OT) 
Hardware and software that detects or causes a change through the direct monitoring  and/or control of physical devices, processes and events in the enterprise. 
Source: DOE O 205.1C, Department of Energy Cyber Security Program 
Organization 
An entity of any size, complexity, or positioning within an organizational structure (e.g., a  federal agency, or, as appropriate, any of its operational elements). 
See Glossary: Enterprise 
Source: NIST SP 800-37 Rev 1 
Organization Seeking Certification (OSC) 
The  entity  that  is  going  through  the  CMMC  assessment  process  to  receive  a  level  of  certification for a given environment. 
Source: CMMC 
Organizational Asset 
See Glossary: Asset 
Source(s): NISTIR 7693, NISTIR 7694 
Organizational System(s) 
The term organizational system is used in many of the CUI security requirements in NIST  Special  Publication  800-171.  This  term  has  a  specific  meaning  regarding  the  scope  of  applicability for the CUI security requirements. The requirements apply only to components  of nonfederal systems that process, store, or transmit CUI, or that provide security protection  for such components. The appropriate scoping for the security requirements is an important  factor in determining protection-related investment decisions and managing security risk  for nonfederal organizations that have the responsibility of safeguarding CUI. 
Source: NIST SP 800-171 Rev 1 
Organizationally Defined 
As determined by the contractor being assessed. This can be applied to a frequency or rate  at  which  something  occurs  within  a  given  time  period,  or  it  could  be  associated  with  describing the configuration of a contractor’s solution. 
Source: CMMC 
Out-of-Scope Asset 
Out-of-Scope Assets cannot process, store, or transmit CUI because they are physically or  logically separated from CUI Assets or are inherently unable to do so. 
 
 
CMMC Glossary and Acronyms  Version 2.0 18   
 
 
 
Source: CMMC 
 
 
Glossary 
Patch 
An update to an operating system, application, or other software issued specifically to  correct particular problems with the software. 
Source: NIST SP 800-123 
Penetration Testing (Pentesting) 
Security testing in which evaluators mimic real-world attacks in an attempt to identify ways  to circumvent the security features of an application, system, or network. Penetration testing  often involves issuing real attacks on real systems and data, using the same tools and  techniques used by actual attackers. Most penetration tests involve looking for combinations  of vulnerabilities on a single system or multiple systems that can be used to gain more access  than could be achieved through a single vulnerability. 
Source: NIST SP 800-115 
Periodically 
Occurring at regular intervals. As used in many practices within CMMC, the interval length is  organizationally defined to provided contractor flexibility, with an interval length of no more  than one year. 
Source: Oxford Dictionary (adapted) 
Personally Identifiable Information (PII) 
Information that can be used to distinguish or trace an individual’s identity, either alone or 
when combined with other information that is linked or linkable to a specific individual. 
Source: NIST SP 800-53 Rev 5 
Plan 
An artifact or collection of artifacts that provides oversight for implementing defined CMMC  policies. A plan should include a mission and/or vision statement, strategic goals/objectives,  relevant standards and procedures, and the people, funding, and tool resources needed to  implement the defined CMMC policies. 
Source: CMMC 
Policy 
An artifact or collection of artifacts that establishes governance over the implementation of  CMMC practices and activities. The policy should include the stated purpose, the defined  scope, roles and responsibilities of the activities covered by the policy, and any included  regulatory guidelines. The policy should establish or direct the establishment of procedures  to carry out and meet the intent of the policy and should be endorsed by senior management  to show its support of the policy. 
Source: CMMC 
Portable Storage Device 
A system component that can be inserted into and removed from a system, and that is used  to store data or information (e.g., text, video, audio, and/or image data). Such components  are typically implemented on magnetic, optical, or solid-state devices (e.g., floppy disks, 
 
 
CMMC Glossary and Acronyms  Version 2.0 19   
 
Glossary 
 
compact/digital  video  disks,  flash/thumb  drives,  external  hard  disk  drives,  and  flash  memory cards/drives that contain nonvolatile memory). 
Source: NIST SP 800-171 Rev 2 
Practice 
An activity or set of activities that are performed to meet the defined CMMC objectives. 
Source: CMMC 
Privilege 
A right granted to an individual, a program, or a process. 
Source: CNSSI 4009, NIST SP 800-12 Rev 1 
Privileged Account 
A user, system, or network account authorized (and, therefore, trusted) to perform security- relevant functions that ordinary accounts are not authorized to perform. 
Source: NIST SP 800-171 Rev. 2 (adapted) 
Privileged User 
A user who is authorized (and, therefore, trusted) to perform security-relevant functions  that ordinary users are not authorized to perform. 
Source: NIST SP 800-171 Rev. 2 
Procedure 
The documented details for how an activity is implemented to achieve a desired outcome.  A procedure should provide enough detail for a trained individual to perform the activity. 
Source: CMMC 
Process 
A procedural activity that is performed to implement a defined objective. 
Source: CMMC 
Proxy (Web Proxy) 
An application that “breaks” the connection between client and server. The proxy accepts  certain types of traffic entering or leaving a network and processes it and forwards it. 
Note: This effectively closes the straight path between the internal and external networks  making it more difficult for an attacker to obtain internal addresses and other details of the  organization’s internal network. Proxy servers are available for common Internet services;  for example, a hypertext transfer protocol (HTTP/HTTPS) proxy used for Web access. 
Source: CNSSI 4009 (adapted) 
Real Time, Real-Time (modifier) 
Pertaining to the performance of a computation during the actual time that the related  physical process transpires so that the results of the computation can be used to guide the  physical process. 
Source(s): NIST SP 800-82 Rev. 2, NISTIR 6859 
 
 
 
CMMC Glossary and Acronyms  Version 2.0 20
 
Glossary 
Recovery 
Actions  necessary  to  restore  data  files  of  an  information  system  and  computational  capability after a system failure. 
Source: CNSSI 4009 
Red Team 
A group of people authorized and organized to emulate a potential adversary’s attack or  exploitation capabilities against an enterprise’s security posture. The Red Team’s objective  is to improve enterprise Information Assurance by demonstrating the impacts of successful  attacks and by demonstrating what works for the defenders (i.e., the Blue Team) in an  operational environment. 
Source: CNSSI 4009 
Red Teaming 
The act(s) performed  by a “red team” in order to identify  weaknesses, vulnerabilities,  procedural shortcomings, and misconfigurations within an organization’s cyber  environment. Red Teaming includes creation of a “Rules of Engagement” document by which  the red team honors over the course of their actions. It is expected that the Red Team will  produce a final report at the end of the event period. 
Source: CMMC 
Regularly 
On a regular basis: at regular intervals. 
Source: Oxford Dictionary 
Remote Access 
Access to an organizational system by a user (or a process acting on behalf of a user)  communicating through an external network (e.g., the Internet). 
Source: NIST SP 800-171 Rev. 2 
Removable Media 
Portable data storage medium that can be added to or removed from a computing device or  network. 
Note:  Examples  include,  but  are  not  limited  to:  optical  discs  (CD,  DVD,  Blu-ray);  external/removable hard drives; external/removable Solid-State Disk (SSD) drives;  magnetic/optical tapes; flash memory devices (USB, eSATA, Flash Drive, Thumb Drive); flash  memory  cards  (Secure  Digital,  CompactFlash,  Memory  Stick,  MMC,  xD);  and  other  external/removable disks (floppy, Zip, Jaz, Bernoulli, UMD). 
See Glossary: Portable Storage Device 
Source: CNSSI 4009 
Reporting [forensics] 
The final phase of the computer and network forensic process, which involves reporting the  results of the analysis; this may include describing the actions used, explaining how tools  and procedures were selected, determining what other actions need to be performed (e.g.,  forensic examination of additional data sources, securing identified vulnerabilities,  improving existing security controls), and providing recommendations for improvement to 
 
CMMC Glossary and Acronyms  Version 2.0 21   
 
Glossary 
 
policies, guidelines, procedures, tools, and other aspects of the forensic process.  The formality of the reporting step varies greatly depending on the situation. 
Source: NIST SP 800-86 
Residual Risk 
Portion of risk remaining after security measures have been applied. 
Source: NIST SP 800-33 (adapted) 
Resilience 
The ability to prepare for and adapt to changing conditions and withstand and recover  rapidly from disruptions. Resilience includes the ability to withstand and recover from  deliberate attacks, accidents, or naturally occurring threats or incidents. 
Source: PPD 21 
Restricted Information Systems 
Systems (and associated IT components comprising the system) that are configured based  on government requirements (i.e., connected to something that was required to support a  functional requirement) and are used to support a contract (e.g., fielded systems, obsolete  systems, and product deliverable replicas). 
Source: CMMC 
Risk 
A measure of the extent to which an entity is threatened by a potential circumstance or event,  and typically a function of: 
 the adverse impacts that would arise if the circumstance or event occurs and 
 the likelihood of occurrence. 
System-related security risks are those risks that arise from the loss of confidentiality,  integrity, or availability of information or systems. Such risks reflect the potential adverse  impacts to organizational operations, organizational assets, individuals, other organizations,  and the Nation. 
Source: FIPS 200 (adapted) 
Risk Analysis 
The process of identifying the risks to system security and determining the likelihood of  occurrence, the resulting impact, and the additional safeguards that mitigate this impact.  Part of risk management and synonymous with risk assessment. 
Source: NIST SP 800-27 
Risk Assessment 
 The  process  of  identifying  risks  to  organizational  operations  (including  mission, 
functions, image, reputation), organizational assets, individuals, other organizations, and  the Nation, resulting from the operation of a system. 
 Part of risk management, incorporates threat and vulnerability analyses, and considers  mitigations provided by security controls planned or in place. Synonymous with risk  analysis. 
Source: NIST SP 800-171 
 
CMMC Glossary and Acronyms  Version 2.0 22   
 
Glossary 
Risk Management (RM) 
The program and supporting processes to manage information security risk to  organizational operations (including mission, functions, image, reputation), organizational  assets, individuals, other organizations, and the Nation, and includes: 
 establishing the context for risk-related activities, 
 assessing risk, 
 responding to risk once determined, and 
 monitoring risk over time. 
Source: CNSSI 4009 
Risk Mitigation 
Prioritizing, evaluating, and implementing the appropriate risk-reducing controls/  countermeasures recommended from the risk management process. 
Source: CNSSI 4009 
Risk Mitigation Plan 
A strategy for mitigating risk that seeks to minimize the risk to an acceptable level. 
Source: CERT RMM v1.2 
Risk Tolerance 
The level of risk an entity is willing to assume in order to achieve a potential desired result. 
Source: CNSSI 4009 
Root-Cause Analysis 
An approach for determining the underlying causes of events or problems as a means of  addressing the symptoms of such events as they manifest in organizational disruptions. 
Source: CERT RMM v1.2 
Root Directory 
The top-level directory in a folder hierarchy. 
Source: CMMC 
Safeguards 
The protective measures prescribed to meet the security requirements (i.e., confidentiality,  integrity, and availability) specified for an information system. Safeguards may include  security features, management constraints, personnel security, and security of physical  structures, areas, and devices. Synonymous with security controls and countermeasures. 
Source: FIPS 200 
Sandboxing 
A restricted, controlled execution environment that prevents potentially malicious software,  such as mobile code, from accessing any system resources except those for which the  software is authorized. 
Source: CNSSI 4009 
 
 
 
CMMC Glossary and Acronyms  Version 2.0 23   
 
Glossary 
Scanning 
Sending packets or requests to another system to gain knowledge about the asset, processes,  services, and operations. 
Source: CNSSI 4009 (adapted) 
Security Assessment 
See Glossary: Security Control Assessment 
Security Control Assessment (Security Assessment, Security Practice Assessment) 
The testing or evaluation of security controls to determine the extent to which the controls  are implemented correctly, operating as intended, and producing the desired outcome with  respect to meeting the security requirements for a system or organization. 
Source: CNSSI 4009 (adapted) 
Security Domain 
An environment or context that includes a set of system resources and a set of system entities  that have the right to access the resources as defined by a common security policy, security  model, or security architecture. 
Source: CNSSI 4009 
Security Operations Center (SOC) 
A centralized function within an organization utilizing people, processes, and technologies  to continuously monitor and improve an organization's security posture while preventing,  detecting, analyzing, and responding to cybersecurity incidents. 
Source: CMMC 
Security Policy 
Security policies define the objectives and constraints for the security program. Policies are  created  at  several  levels,  ranging  from  organization  or  corporate  policy  to  specific  operational constraints (e.g., remote access). In general, policies provide answers to the  questions “what” and “why” without dealing with “how.” Policies are normally stated in  terms that are technology-independent. 
Source: NIST SP 800-82 Rev 2 
Security Protection Assets 
Security provide security functions or capabilities within the contractor’s CMMC 
Assessment Scope. 
Source: CMMC 
Security Practice Assessment 
See Glossary: Security Control Assessment 
Sensitive Information 
Information where the loss, misuse, or unauthorized access or modification could adversely  affect the national interest or the conduct of federal programs, or the privacy to which  individuals are entitled under 5 U.S.C. Section 552a (the Privacy Act). 
Source: NIST SP 800-53 Rev 4 (adapted) 
 
 
CMMC Glossary and Acronyms  Version 2.0 24   
 
Glossary 
Separation of Duties 
Refers to the principle that no user should be given enough privileges to misuse the system  on their own. For example, the person authorizing a paycheck should not also be the one who  can  prepare  them.  Separation  of  duties  can  be  enforced  either  statically  (by  defining  conflicting roles, i.e., roles which cannot be executed by the same user) or dynamically (by  enforcing the control at access time). 
Source: NIST SP 800-192 
Service Continuity Plan 
A  service-specific  plan  for  sustaining  services  and  associated  assets  under  degraded  conditions. 
Source: CERT RMM v1.2 
SHA-256 
A Secure Hash Algorithm (SHA) that produces a condensed representation of electronic data,  or message digest, 256 bits in length. 
Source: FIPS 180-4 
Situational Awareness (SA) 
Within a volume of time and space, the perception of an enterprise’s security posture and its  threat environment; the comprehension/meaning of both taken together (risk); and the  projection of their status into the near future. 
Source: CNSSI 4009 
Specialized Asset 
The following are considered specialized assets for CMMC: Government Property, Internet  of Things (IoT) or Industrial Internet of Things (IIoT), Operational Technology (OT), and  Restricted Information Systems. 
Source: CMMC 
Split Tunneling 
The process of allowing a remote user or device to establish a non-remote connection with  a system and simultaneously communicate via some other connection to a resource in an  external network. This method of network access enables a user to access remote devices  (e.g., a networked printer) at the same time as accessing uncontrolled networks. 
Source: NIST SP 800-171 
Spyware 
Software that is secretly or surreptitiously installed into an information system to gather  information on individuals or organizations without their knowledge; a type of malicious code. 
Source: NIST SP 800-53 Rev 5 
 
 
 
 
 
 
 
CMMC Glossary and Acronyms  Version 2.0 25   
 
Glossary 
Standards 
A document, established by consensus and approved by a recognized body, that provides for  common and repeated use, rules, guidelines or characteristics for activities or their results,  aimed at the achievement of the optimum degree of order in a given context. 
Note: Standards should be based on the consolidated results of science, technology and 
experience, and aimed at the promotion of optimum community benefits. 
Source: NISTIR 8074 Vol. 2 
Standard Process 
An operational definition of the basic process that guides the establishment of a common  process in an organization. A standard process describes the fundamental process elements  that are expected to be incorporated into any defined process. It also describes relationships  (e.g., ordering, interfaces) among these process elements. 
See Glossary: Defined Process 
Source: CERT RMM v1.2 
Subnetwork 
A subordinate part of an organization’s enterprise network. 
Source: CMMC 
Supply Chain 
A system of organizations, people, activities, information, and resources, possibly  international in scope, that provides products or services to consumers. 
Source: CNSSI 4009 
Supply Chain Attack 
Attacks that allow the adversary to utilize implants or other vulnerabilities inserted prior to  installation in order to infiltrate data, or manipulate information technology hardware,  software, operating systems, peripherals (information technology products) or services at  any point during the life cycle. 
Source: CNSSI 4009 
Supply Chain Risk Management (SCRM) 
A  systematic  process  for  managing  supply  chain  risk  by  identifying  susceptibilities,  vulnerabilities,  and  threats  throughout  the  supply  chain  and  developing  mitigation  strategies to combat those threats whether presented by the supplier, the supplied product  and its subcomponents, or the supply chain (e.g., initial production, packaging, handling,  storage, transport, mission operation, and disposal). 
Source: CNSSD No. 505 
Sustain 
Maintain a desired operational state. 
Source: CERT RMM v1.2 
 
 
 
 
 
CMMC Glossary and Acronyms  Version 2.0 26   
 
Glossary 
System Assets 
Any software, hardware (IT, OT, IoT), data, administrative, physical, communications, or  personnel resource within an information system. 
Source: CNSSI 4009 
System Boundary 
The scope of the system and environment being assessed. All components of an information  system to be authorized for operation by an authorizing official and excludes separately  authorized systems, to which the information system is connected. The System Boundary is  equivalent to the defined CMMC Assessment Scope. 
See Glossary: CMMC Assessment Scope 
Source(s): CNSSI 4009-2015 under authorization boundary NIST SP 800-53 Rev. 4,  NIST SP 800-53A Rev. 1, NIST SP 800-37 Rev. 1. 
System Integrity 
The quality that a system has when it performs its intended function in an unimpaired  manner,  free  from  unauthorized  manipulation  of  the  system,  whether  intentional  or  accidental. 
Source: NIST SP 800-27 
System Interconnection 
A system interconnection is defined as the direct connection of two or more IT systems for  the purpose of sharing data and other information resources. 
Source: NIST 800-47 
System Security Plan (SSP) 
The formal document prepared by the information system owner (or common security  controls  owner  for  inherited  controls)  that  provides  an  overview  of  the  security  requirements for the system and describes the security controls in place or planned for  meeting those requirements. The plan can also contain as supporting appendices or as  references, other key security-related documents such as a risk assessment, privacy impact  assessment, system interconnection agreements, contingency plan, security configurations,  configuration management plan, and incident response plan. 
Source: CNSSI 4009 
Tampering 
An intentional but unauthorized act resulting in the modification of a system, components of  systems, its intended behavior, or data. 
Source: NIST SP 800-53 Rev 5 
Test Equipment 
Hardware  and/or  associated  IT  components  used  in  the  testing  of  products,  system  components,  and  contract  deliverables  (e.g.,  oscilloscopes,  spectrum  analyzers,  power  meters, and special test equipment). 
Source: CMMC 
 
 
 
CMMC Glossary and Acronyms  Version 2.0 27   
 
Glossary 
Threat 
Any circumstance or event with the potential to adversely impact organizational operations  (including mission, functions, image, or reputation), organizational assets, individuals, other  organizations,  or  the  Nation  through  an  information  system  via  unauthorized  access,  destruction, disclosure, modification of information, and/or denial of service. 
Source: NIST SP 800-30 Rev 1 
Threat Actor 
An individual or a group posing a threat. 
Source: NIST SP 800-150 
Threat Intelligence 
Threat  information  that  has  been  aggregated,  transformed,  analyzed,  interpreted,  or  enriched to provide the necessary context for decision-making processes. 
Source: NIST SP 800-150 
Threat Monitoring 
Analysis, assessment, and review of audit trails and other information collected for the  purpose of searching out system events that may constitute violations of system security. 
Source: CNSSI 4009 
Trigger 
A set of logic statements to be applied to a data stream that produces an event when an  anomalous incident or behavior occurs. 
Source: CNSSD No. 504 (adapted) 
Trojan Horse 
A computer program that appears to have a useful function, but also has a hidden and  potentially malicious function that evades security mechanisms, sometimes by exploiting  legitimate authorizations of a system entity that invokes the program. 
Source: CNSSI 4009 
Tunneling 
Technology  enabling  one  network  to  send  its  data  via  another  network’s  connections.  Tunneling works by encapsulating a network protocol within packets carried by the second  network. 
Source: CNSSI 4009 
Unauthorized Access 
Any access that violates the stated security policy. 
Source: CNSSI 4009 
User 
Individual, or (system) process acting on behalf of an individual, authorized to access a  system. 
Source: NIST SP 800-53 Rev 5 
 
 
CMMC Glossary and Acronyms  Version 2.0 28   
 
Glossary 
Virus 
A computer program that can copy itself and infect a computer without permission or  knowledge of the user. A virus might corrupt or delete data on a computer, use e-mail  programs to spread itself to other computers, or even erase everything on a hard disk. 
See Glossary: Malicious Code 
Source: CNSSI 4009 
Vulnerability 
Weakness  in  an  information  system,  system  security  procedures,  internal  controls,  or  implementation that could be exploited by a threat source. 
Source: NIST SP 800-30 Rev 1 
Vulnerability Assessment 
Systematic examination of an information system or product to determine the adequacy of  security measures, identify security deficiencies, provide data from which to predict the  effectiveness of proposed security measures, and confirm the adequacy of such measures  after implementation. 
Source: CNSSI 4009 
Vulnerability Management 
An Information Security Continuous Monitoring (ISCM) capability that identifies  vulnerabilities [Common Vulnerabilities and Exposures (CVEs)] on devices that are likely to  be used by attackers to compromise a device and use it as a platform from which to extend  compromise to the network. 
Source: NISTIR 8011 Vol. 1 
Web Proxy
See Glossary: Proxy
Whitelist 
An approved list or register of entities that are provided a particular privilege, service,  mobility, access or recognition. 
An implementation of a default deny-all or allow-by-exception policy across an enterprise  environment, and a clear, concise, timely process for adding exceptions when required for  mission accomplishments. 
Source: CNSSI 1011
|
|
|-
|Whitelist
|An approved list or register of entities that are provided a particular privilege, service, mobility, access or recognition.
An implementation of a default deny-all or allow-by-exception policy across an enterprise environment, and a clear, concise, timely process for adding exceptions when required for mission accomplishments.
|
|
* CNSSI 1011
|}
|}

Latest revision as of 23:31, 30 November 2022

Source of Reference: official CMMC Glossary from Department of Defense Chief Information Officer (DoD CIO).

For inquiries and reporting errors on this wiki, please contact us. Thank you.

A

Term Description Source
Access Ability to make use of any information system (IS) resource.
  • CNSSI 4009
  • NIST SP 800-32
Access Authority An entity responsible for monitoring and granting access privileges for other authorized entities.
  • CNSSI 4009
Access Control (AC) The process of granting or denying specific requests to:
  • obtain and use information and related information processing services; and
  • enter specific physical facilities (e.g., federal buildings, military establishments, border crossing entrances).
  • FIPS 201
  • CNSSI 4009
Access Control Policy (Access Management Policy) The set of rules that define conditions under which an access may take place.
  • NISTIR 7316
Access Profile Association of a user with a list of protected objects user may access.
  • CNSSI 4009
Accountability The security goal that generates requirement for actions of an entity to be traced uniquely to that entity. This supports nonrepudiation, deterrence, fault isolation, intrusion detection and prevention, and after-action recovery and legal action.
  • NIST SP 800-27
Activity / Activities Set of actions that are accomplished within a practice in order to make it successful. Multiple activities can make up a practice. Practices may have only one activity or a set of activities.
  • CMMC
Administrative Safeguards Administrative actions and policies and procedures to manage selection, development, implementation, and maintenance of security measures to protect any electronic information that is by definition “protected information” (e.g., protected health information) and to manage conduct of covered entity’s workforce in relation to protection of that information.
  • NIST SP 800-66 Rev 1 (adapted)
Advanced Persistent Threat (APT) An adversary that possesses sophisticated levels of expertise and significant resources which allow it to create opportunities to achieve its objectives by using multiple attack vectors (e.g., cyber, physical, and deception).The se objectives typically include establishing and extending footholds within information technology infrastructure of targeted organizations for purposes of exfiltrating information, undermining or impeding critical aspects of a mission, program, or organization; or positioning itself to carry outThe se objectives in future. advanced persistent threat:
  • pursues its objectives repeatedly over an extended period of time;
  • adapts to defenders’ efforts to resist it;, and
  • is determined to maintain level of interaction needed to execute its objectives.
  • NIST SP 800-39
Adversary Individual, group, organization, or government that conducts or has intent to conduct detrimental activities.
  • CNSSI 4009
Adversarial Assessment Assesses ability of an organization equipped with a system to support its mission while withstanding cyber threat activity representative of an actual adversary.
  • DoDI 5000.02 Enclosure 14 (adapted)
Air Gap An interface between two systems that:
  • are not connected physically and
  • do not have any logical connection automated (i.e., data is transferred through interface only manually, under human control).
  • IETF RFC 4949 v2
Alert An internal or external notification that a specific action has been identified within an organization’s information systems.
  • CNSSI 4009 (adapted)
Anti-Malware Tools Tools that help identify, prevent execution, and reverse engineer malware.
  • CMMC
Anti-Spyware Software A program that specializes in detecting both malware and non-malware forms of spyware.
  • NIST SP 800-69
Anti-Tamper Systems engineering activities intended to deter and/or delay exploitation of technologies in a system in order to impede countermeasure development, unintended technology transfer, or alteration of a system.
  • DoDI 5200.39 (adapted)
Anti-Virus Software A program that monitors a computer or network to identify all major types of malware and prevent or contain malware incidents.
  • NIST SP 800-83
Assessment The testing or evaluation of security controls to determine extent to which controls are implemented correctly, operating as intended, and producing desired outcome with respect to meeting security requirements for an information system or organization.
  • NIST SP 800-37 Rev. 2
Assessment Assessment is term used by CMMC for activity performed by C3PAO to evaluate CMMC level of a DIB contractor. Self-assessment is term used by CMMC for activity performed by a DIB contractor to evaluateThe ir own CMMC level.
  • CMMC
Asset (Organizational Asset) Anything that has value to an organization, including, but not limited to, another organization, person, computing device, information technology (IT) system, IT network, IT circuit, software (both an installed instance and a physical instance), virtual computing platform (common in cloud and virtualized computing), and related hardware (e.g., locks, cabinets, keyboards).
  • NISTIR 7693
  • NISTIR 7694
Asset Custodian (Custodian) A person or group responsible for day-to-day management, operation, and security of an asset.
  • CMMC
Asset Management (AM) Management of organizational assets. This may include inventory, configuration, destruction, disposal, and updates to organizational assets.
  • CERT RMM v1.2
Asset Owner (Information Asset Owner) A person or organizational unit (internal or external to organization) with primary responsibility for viability, productivity, security, and resilience of an organizational asset. For example, accounts payable department is owner of vendor database.
  • CERT RMM v1.2
Asset Types The following asset types should be included when classifying assets:
  • People – employees, contractors, vendors, and external service provider personnel;
  • Technology – servers, client computers, mobile devices, network appliances (e.g., firewalls, switches, APs, and routers), VoIP devices, applications, virtual machines, and database systems;
  • Facilities – physical office locations, satellite offices, server rooms, datacenters, manufacturing plants, and secured rooms; and
  • External Service Provider (ESP) – external people, technology, or facilities that organization utilizes, including Cloud Service Providers, Managed Service Providers, Managed Security Service Providers, Cybersecurity-as-a-Service Providers.
  • CMMC
Attack Surface The set of points on boundary of a system, a system element, or an environment where an attacker can try to enter, cause an effect on, or extract data from.
  • NIST SP 800-160 Vol. 2
Attribute-Based Access Control (ABAC) Access control based on attributes associated with and about subjects, objects, targets, initiators, resources, or environment. An access control rule set defines combination of attributes under which an access may take place.

See Glossary: Identity, Credential, and Access Management (ICAM)

  • CNSSI 4009
Availability * Ensuring timely and reliable access to and use of information.
  • Timely, reliable access to data and information services for authorized users.
  • CNSSI 4009
Audit Independent review and examination of records and activities to assess adequacy of system controls, to ensure compliance with established policies and operational procedures, and to recommend necessary changes in controls, policies, or procedures.
  • NIST SP 800-32
Audit Log A chronological record of system activities.Includes records of system accesses and operations performed in a given period.
  • CNSSI 4009
Audit Record An individual entry in an audit log related to an audited event.
  • NIST SP 800-53 Rev 5
Authentication A security measure designed to protect a communications system against acceptance of fraudulent transmission or simulation by establishing validity of a transmission, message, originator, or a means of verifying an individual's eligibility to receive specific categories of information.
  • CNSSI 4005
  • NSA/CSS Manual Number 3-16
Au nticator Something that claimant possesses and controls (typically a cryptographic module or password) that is used to au nticate claimant’s identity. This was previously referred to as a token.
  • NIST SP 800-53 Rev 5
Authoritative Source (Trusted Source) An entity that has access to, or verified copies of, accurate information from an issuing source such that a Credential Service Provider (CSP) can confirm validity of identity evidence supplied by an applicant during identity proofing.An issuing source may also be an authoritative source. Often, authoritative sources are determined by a policy decision of agency or CSP before the y can be used in identity proofing validation phase.
  • NIST SP 800-63-3
Authorization The right or a permission that is granted to a system entity (user, program, or process) to access a system resource.
  • NIST SP 800-82 Rev 2 (adapted)
Awareness A learning process that sets stage for training by changing individual and organizational attitudes to realize importance of security and adverse consequences of its failure.
  • NIST SP 800-16
Awareness and Training Program Explains proper rules of behavior for use of agency information systems and information.The program communicates information technology (IT) security policies and procedures that need to be followed. (i.e., NSTISSD 501, NIST SP 800-50).
  • CNSSI 4009

B

Term Description Source
Backup A copy of files and programs made to facilitate recovery, if necessary.
  • NIST SP 800-34
  • CNSSI 4009
Baseline Hardware, software, databases, and relevant documentation for an information system at a given point in time.
  • CNSSI 4009
Baseline Configuration A set of specifications for a system, or Configuration Item (CI) within a system, that has been formally reviewed and agreed on at a given point in time, and which can be changed only through change control procedures. baseline configuration is used as a basis for future builds, releases, and/or changes.
  • NIST SP 800-128
Baseline Security The minimum security controls required for safeguarding an IT system based on its identified needs for confidentiality, integrity, and/or availability protection.
  • NIST SP 800-16
Baselining Monitoring resources to determine typical utilization patterns so that significant deviations can be detected.
  • NIST SP 800-61
Blacklist A list of discrete entities, such as IP addresses, host names, applications, software libraries, and so forth that have been previously determined to be associated with malicious activity thus requiring access or execution restrictions.
  • NIST SP 800-114 (adapted)
  • NIST SP 800-94 (adapted)
  • CNSSI 4009 (adapted)
Blacklisting Software A list of applications (software) and software libraries that are forbidden to execute on an organizational asset.
  • NIST SP 800-94 (adapted)
Blue Team
  • The group responsible for defending an organization’s use of information systems by maintaining its security posture against a group of mock attackers (i.e., Red Team).Typically, Blue Team and its supporters must defend against real or simulated attacks:
    • over a significant period of time;
    • in a representative operational context (e.g., as part of an operational exercise); and
    • according to rules established and monitored with help of a neutral group refereeing simulation or exercise (i.e., White Team).
  • The term Blue Team is also used for defining a group of individuals who conduct operational network vulnerability evaluations and provide mitigation techniques to customers who have a need for an independent technical review ofThe ir network security posture. Blue Team identifies security threats and risks in operating environment, and in cooperation with customer, analyzes network environment and its current state of security readiness. Based on Blue Team findings and expertise,The y provide recommendations that integrate into an overall community security solution to increase customer's cyber security readiness posture. Often, a Blue Team is employed by itself or prior to a Red Team employment to ensure that customer's networks are as secure as possible before having Red Team test systems.
  • CNSSI 4009 (adapted)
Breach An incident where an adversary has gained access to internal network of an organization or an organizationally owned asset in a manner that breaks organizational policy for accessing cyber assets and results in loss of information, data, or asset. A breach usually consists of loss of an asset due to gained access.
  • CMMC

C

Term Description Source
Change Control (Change Management) The process of regulating and approving changes to hardware, firmware, software, and documentation throughout development and operational life cycle of an information system.
  • NIST SP 800-128
  • CNSSI 4009
Change Management See Glossary: Change Control
Cipher
  • Any cryptographic system in which arbitrary symbols or groups of symbols, represent units of plain text, or in which units of plain text are rearranged, or both.
  • A series of transformations that converts plaintext to ciphertext using Cipher Key.
  • FIPS 197
Ciphertext A term that describes data in its encrypted form.
  • NIST SP 800-57 Part 1 Rev 3
CMMC Assessment Scope Includes all assets in contractor’s environment that will be assessed.
  • CMMC
CMMC Asset Categories CMMC defined five asset categories for scoping activities: CUI Assets, Security Protection Assets, Contractor Risk Managed Assets, Specialized Assets, and Out-of-Scope Asset. Asset categories determine: assessment, segmentation, documentation, and management of assets.
  • CMMC
Compliance Conformity in fulfilling official requirements.
  • Merriam-Webster
Component A discrete identifiable information technology asset that represents a building block of a system and may include hardware, software, and firmware.
  • NIST SP 800-171 Rev. 2 under system component
  • NIST SP 800-128
Confidentiality Preserving authorized restrictions on access and disclosure, including means for protecting personal privacy and proprietary information.
  • 44 U.S.C. 3542
Configuration Item (CI) An aggregation of system components that is designated for configuration management and treated as a single entity in configuration management process.
  • NIST SP 800-53 Rev 5
Configuration Management (CM) A collection of activities focused on establishing and maintaining integrity of information technology products and systems, through control of processes for initializing, changing, and monitoring configurations of those products and systems throughout system development life cycle.
  • NIST SP 800-53 Rev 5
Consequence Effect (change or non-change), usually associated with an event or condition or with system and usually allowed, facilitated, caused, prevented, changed, or contributed to by event, condition, or system.
  • NIST SP 800-160
Container (Information Asset Container) A physical or logical location where assets are stored, transported, and processed.A container can encompass technical containers (servers, network segments, personal computers), physical containers (paper, file rooms, storage spaces, or other media such as CDs, disks, and flash drives), and people (including people who might have detailed knowledge about information asset).
  • CERT RMM v1.2
Context Aware The ability of a system or a system component to ga r information about its environment at any given time and adapt behaviors accordingly. Contextual or context-aware computing uses software and hardware to automatically collect and analyze data to guide responses.
  • CMMC
Continuity of Operations An organization’s ability to sustain assets and services in response to a disruptive event. It is typically used interchangeably with service continuity or continuity of service.
  • CERT RMM v1.2 (adapted)
Consequence Effect (change or non-change), usually associated with an event or condition or with system and usually allowed, facilitated, caused, prevented, changed, or contributed to by event, condition, or system.
  • NIST SP 800-160
Continuous Continuing without stopping; ongoing.
  • Merriam-Webster (adapted)
Continuous Monitoring Maintaining ongoing awareness to support organizational risk decisions.Maintaining ongoingThe awarenessThe ofThe informationThe security,The vulnerabilities,The andThe threatsThe toThe support organizational risk management decisions.
  • CNSSI 4009-2015
  • NIST SP 800-137
  • NIST SP 800-150
Contractor Risk Managed Assets Contractor Risk Managed Assets are capable of, but are not intended to, process, store, or transmit CUI because of security policy, procedures, and practices in place.
  • CMMC
Control The methods, policies, and procedures—manual or automated—used by an organization to safeguard and protect assets, promote efficiency, or adhere to standards. A measure that is modifying risk.

Note: controls include any process, policy, device, practice, or other actions which modify risk.

  • NISTIR 8053 (adapted)
Controlled Unclassified Information (CUI) Information that requires safeguarding or dissemination controls pursuant to and consistent with laws, regulations, and government-wide policies, excluding information that is classified under Executive Order 13526, Classified National Security Information, December 29, 2009, or any predecessor or successor order, or Atomic Energy Act of 1954, as amended.
  • NIST SP 800-171 Rev 2
Covered Defense Information (CDI) A term used to identify information that requires protection under DFARS Clause 252.204-7012. Unclassified controlled technical information (CTI) or other information, as described in CUI Registry, that requires safeguarding or dissemination controls pursuant to and consistent with law, regulations, and Government wide policies and is:
  • Marked or o rwise identified in contract, task order, or delivery order and provided to contractor by or on behalf of, DoD in support of performance of contract; OR
  • Collected, developed, received, transmitted, used, or stored by-or on behalf of-contractor in support of performance of contract.
  • DFARS Clause 252.204-7012
Cryptographic Hashing Function The process of using a ma matical algorithm against data to produce a numeric value that is representative of that data.
  • CNSSI 4009
CUI Assets Assets that process, store, or transmit CUI.
  • CMMC
Custodian See Glossary: Asset Custodian
Cybersecurity Prevention of damage to, protection of, and restoration of computers, electronic communications systems, electronic communications services, wire communication, and electronic communication, including information contained rein, to ensure its availability, integrity, authentication, confidentiality, and nonrepudiation.
  • NSPD-54/HSPD-23

D

Term Description Source
Defense Industrial Base (DIB) The worldwide industrial complex that enables research and development, as well as design, production, delivery, and maintenance of military weapons systems, subsystems, and components or parts, to meet U.S. military requirements.
  • DIB Sector-Specific Plan
  • DHS CISA
Dependency When an entity has access to, control of, ownership in, possession of, responsibility for, or other defined obligations related to one or more assets or services of organization.
  • CERT RMM v1.2 (adapted)
Demilitarized Zone (DMZ) A perimeter network segment that is logically between internal and external networks. Its purpose is to enforce internal network’s Information Assurance (IA) policy for external information exchange and to provide external, untrusted sources with restricted access to releasable information while shielding internal networks from outside attacks.
  • CNSSI 4009
Domain Grouping of like practices based on 14 control families set forth in NIST SP 800-171.
  • CMMC

E

Term Description Source
Encryption The process of changing plaintext into cipher text.
  • NISTIR 7621 Rev 1
  • CNSSI 4009
Encryption Policies Policies that manage use, storage, disposal, and protection of cryptographic keys used to protect organization data and communications.
  • CERT RMM v1.2
Endorse Declare one's public approval or support of.
  • Oxford Dictionary
Enterprise An organization with a defined mission/goal and a defined boundary, using information systems to execute that mission, and with responsibility for managing its own risks and performance. An enterprise may consist of all or some of following business aspects: acquisition, program management, financial management (e.g., budgets), human resources, security, and information systems, information and mission management.
  • CNSSI 4009
Enterprise Architecture The description of an enterprise’s entire set of information systems: howThe y are configured, howThe y are integrated, howThe y interface to external environment at enterprise’s boundary, howThe y are operated to support enterprise mission, and howThe y contribute to enterprise’s overall security posture.
  • CNSSI 4009
Environment See Glossary: Environment of Operations
Environment of Operations The physical and logical surroundings in which an information system processes, stores, and transmits information.
  • NIST 800-53 Rev 5 (adapted)
Establish and Maintain Whenever “establish and maintain” (or “established and maintained”) is used as a phrase, it refers not only to development and maintenance of object of practice (such as a policy) but to documentation of object and observable usage of object. For example, “Formal agreements with external entities are established and maintained” means that not only are agreements formulated, butThe y also are documented, have assigned ownership, and are maintained relative to corrective actions, changes in requirements, or improvements.
  • CERT RMM v1.2
Event Any observable occurrence in a system and/or network.Events sometimes provide indication that an incident is occurring.

See Glossary: Incident

  • CNSSI 4009
Event Correlation Finding relationships between two or more events.
  • NIST SP 800-92
Exercise A simulation of an emergency designed to validate viability of one or more aspects of an information technology plan.
  • NIST SP 800-84

F

Term Description Source
Facility Physical means or equipment for facilitating performance of an action, e.g., buildings, instruments, tools.
  • NIST SP 800-160
Federal Contract Information (FCI) Federal contract information means information, not intended for public release, that is provided by or generated for Government under a contract to develop or deliver a product or service to Government, but not including information provided by Government to public (such as on public websites) or simple transactional information, such as necessary to process payments.
  • 48 CFR § 52.204-21
Federated Trust Trust established within a federation or organization, enabling each of mutually trusting realms to share and use trust information (e.g., credentials) obtained from any of other mutually trusting realms.This trust can be established across computer systems and networks architectures.
  • NIST SP 800-95
Federation A collection of realms (domains) that have established trust amongThe mselves. level of trust may vary, but typically includes au ntication and may include authorization.
  • NIST SP 800-95
Firewall A device or program that controls flow of network traffic between networks or hosts that employ differing security postures.
  • NIST SP 800-41 Rev 1
Flash Drive A removable storage device that utilizes USB port of a system for data transfer.
  • CMMC

G

Term Description Source
Government Property All property owned or leased by Government. Government property includes both Government-furnished and Contractor-acquired property. Government property includes material, equipment, special tooling, special test equipment, and real property. Government property does not include intellectual property or software.
  • FAR 52.245-1

H

Term Description Source
High-Value Asset (HVA) Asset, organization information system, information, and data for which an unauthorized access, use, disclosure, disruption, modification, or destruction could cause a significant impact to organization’s interests, relations, economy, or to employee or stockholder confidence, civil liberties, or health and safety of organization’s people. An HVA may contain sensitive controls, instructions, data used in critical organization operations, or unique collections of data (by size or content), or support an organization’s mission essential functions, making it of specific value to criminal, politically motivated, or state sponsored actors for either direct exploitation or to cause a loss of confidence in organization.
  • OMB M-17-09 (adapted)
High-Value Service Service on which success of organization’s mission depends.
  • CERT RMM v.12

I

Term Description Source
Identification The process of discovering true identity (i.e., origin, initial history) of a person or item from entire collection of similar persons or items.
  • CNSSI 4009-2015
  • FIPS 201-1
  • NIST SP 800-79-2
Identity The set of attribute values (i.e., characteristics) by which an entity is recognizable and that, within scope of an identity manager’s responsibility, is sufficient to distinguish that entity from any other entity.

Note: This also encompasses non-person entities (NPEs).

  • NIST SP 800-161
  • NISTIR 7622
  • CNSSI 4009
Identity-Based Access Control (IBAC) Access control based on identity of user (typically relayed as a characteristic of process acting on behalf of that user) where access authorizations to specific objects are assigned based on user identity.
  • CERT RMM v1.2
Identity, Credential, and Access Management (ICAM) Programs, processes, technologies, and personnel used to create trusted digital identity representations of individuals and non-person entities (NPEs), bind those identities to credentials that may serve as a proxy for individual or NPE in access transactions, and leverage credentials to provide authorized access to an organization‘s resources.

See Glossary: Attribute-Based Access Control (ABAC)

  • CNSSI 4009 (adapted)
Identity Management System Identity management system comprised of one or more systems or applications that manages identity verification, validation, and issuance process.
  • NISTIR 8149
Incident An occurrence that actually or potentially jeopardizes confidentiality, integrity, or availability of a system or information system processes, stores, or transmits or that constitutes a violation or imminent threat of violation of security policies, security procedures, or acceptable use policies.
  • NIST SP 800-171 Rev 2
Incident Handling (Incident Response) The actions organization takes to prevent or contain impact of an incident to organization while it is occurring or shortly after it has occurred.
  • CERT RMM v1.2
Incident Response (IR) See Glossary: Incident Handling
Incident Stakeholder A person or organization with a vested interest in management of an incident throughout its life cycle.
  • CERT RMM v1.2
Industrial Control System (ICS) General term that encompasses several types of control systems, including supervisory control and data acquisition (SCADA) systems, distributed control systems (DCSs), and other control system configurations such as programmable logic controllers (PLCs) found in industrial sectors and critical infrastructures.An industrial control system consists of combinations of control components (e.g., electrical, mechanical, hydraulic, pneumatic) that act toge r to achieve an industrial objective (e.g., manufacturing, transportation of matter or energy).
  • NIST SP 800-53 Rev 5
Industrial Internet of Things (IIoT) See Glossary: Internet of Things (IoT)
Information Asset Container See Glossary: Container
Information Asset Owner See Glossary: Asset Owner
Information Flow The flow of information or connectivity from one location to another. This can be related to data as well as connectivity from one system to another, or from one security domain to ano r. authorization granting permission for information flow comes from a control authority granting permission to an entity, asset, role, or group.
  • CMMC
Information System (IS) A discrete set of information resources organized for The collection, processing, maintenance, use, sharing, dissemination, or disposition of information.
  • NIST 800-171 Rev 2
Information System Component A discrete, identifiable information technology asset (e.g., hardware, software, firmware) that represents a building block of an information system, excluding separately authorized systems to which information system is connected. Information system components include commercial information technology products.
  • CNSSI 4009-2015
  • NIST SP 800-53 Rev 4 (adapted)
Insider Any person with authorized access to any organization or United States Government resource to include personnel, facilities, information, equipment, networks, or systems.
  • CNSSD No. 504
Insider Threat The threat that an insider will use her/his authorized access, wittingly or unwittingly, to do harm to security of organization or United States. This threat can include damage to United States through espionage, terrorism, unauthorized disclosure, or through loss or degradation of departmental resources or capabilities.
  • CNSSD No. 504 (adapted)
Insider Threat Program A coordinated collection of capabilities authorized by Department/Agency (D/A) that is organized to deter, detect, and mitigate unauthorized disclosure of sensitive information.
  • CNSSD No. 504
Integrity The security objective that generates requirement for protection against ei r intentional or accidental attempts to violate data integrity (The property that data has not been altered in an unauthorized manner) or system integrity (The quality that a system has when it performs its intended function in an unimpaired manner, free from unauthorized manipulation).
  • NIST SP 800-33
Internet of Things (IoT) Interconnected devices having physical or virtual representation in digital world, sensing/actuation capability, and programmability features.The y are uniquely identifiable and may include smart electric grids, lighting, heating, air conditioning, and fire and smoke detectors.
  • iot.ieee.org/definition
  • NIST SP 800-183
Inventory The physical or virtual verification of presence of each organizational asset.
  • CNSSI 4005 (adapted)

L

Term Description Source
Least Privilege A security principle that restricts access privileges of authorized personnel (e.g., program execution privileges, file modification privileges) to minimum necessary to performThe ir jobs.
  • NIST SP 800-57 Part 2
Life Cycle Evolution of a system, product, service, project, or other human-made entity from conception through retirement.
  • NIST SP 800-161

M

Term Description Source
Maintenance Any act that ei r prevents failure or malfunction of equipment or restores its operating capability.
  • NIST SP 800-82 Rev 2
Malicious Code Software or firmware intended to perform an unauthorized process that will have adverse impact on confidentiality, integrity, or availability of an information system. A virus, worm, Trojan horse, or other code-based entity that infects a host. Spyware and some forms of adware are also examples of malicious code.
  • CNSSI 4009
Malware Software or firmware intended to perform an unauthorized process that will have adverse impact on confidentiality, integrity, or availability of an information system. A virus, worm, Trojan horse, or other code-based entity that infects a host. Spyware and some forms of adware are also examples of malicious code (malware).
  • NIST SP 800-82 Rev 2
Maturity Model A maturity model is a set of characteristics, attributes, or indicators that represent progression in a particular domain. A maturity model allows an organization or industry to have its practices, processes, and methods evaluated against a clear set of requirements (such as activities or processes) that define specific maturity levels. At any given maturity level, an organization is expected to exhibit capabilities of that level. A tool that helps assess current effectiveness of an organization, and supports determining what capabilitiesThe y need in order to obtain next level of maturity in order to continue progression up levels of model.
  • CERT RMM v1.2
Media Physical devices or writing surfaces including but not limited to, magnetic tapes, optical disks, magnetic disks, Large-Scale Integration (LSI) memory chips, printouts (but not including display media) onto which information is recorded, stored, or printed within an information system.
  • FIPS 200
Media Sanitization The actions taken to render data written on media unrecoverable by both ordinary and extraordinary means.
  • NIST SP 800-88 Rev 1
Mobile Code Software programs or parts of programs obtained from remote systems, transmitted across a network, and executed on a local system without explicit installation or execution by recipient.

Note: Some examples of software technologies that provide mechanisms for production and use of mobile code include Java, JavaScript, ActiveX, VBScript, etc.

  • NIST SP 800-53 Rev 5
  • NIST SP 800-18
  • CNSSI 4009
Mobile Device A portable computing device that:
  • has a small form factor such that it can easily be carried by a single individual;
  • is designed to operate without a physical connection (e.g., wirelessly transmit or receive information);
  • possesses local, non-removable data storage; and
  • is powered on for extended periods of time with a self-contained power source.

Mobile devices may also include voice communication capabilities, on-board sensors that allow device to capture (e.g., photograph, video, record, or determine location) information, and/or built-in features for synchronizing local data with remote locations.Examples include smart phones, tablets, and e-readers. Note: If device only has storage capability and is not capable of processing or transmitting/receiving information,The n it is considered a portable storage device, not a mobile device. See Glossary: Portable Storage Device Note: Laptops are excluded from scope of this definition (see NIST SP 800-124).

  • NIST SP 800-53 Rev 5
Monitor The act of continually checking, supervising, critically observing, or determining status in order to identify change from performance level required or expected at an organizationally defined frequency and rate.
  • NIST SP 800-160 (adapted)
Multifactor Authentication (MFA) An authentication system or an authenticator that requires more than one authentication factor for successful authentication. Multifactor authentication can be performed using a single authenticator that provides more than one factor or by a combination of authenticators that provide different factors.

The three authentication factors are something you know, something you have, and something you are. See Glossary: Authenticator

  • NIST SP 800-53 Rev 5

O

Term Description Source
Ongoing Basis Actions occurring, indefinitely. Actions that do not stop unless a stop action is purposely put in place.
  • CMMC
Operational Resilience The ability of systems to resist, absorb, and recover from or adapt to an adverse occurrence during operation that may cause harm, destruction, or loss of ability to perform mission- related functions.
  • CNSSI 4009
Operational Technology (OT) Hardware and software that detects or causes a change through direct monitoring and/or control of physical devices, processes and events in enterprise.
  • DOE O 205.1C
  • Department of Energy Cyber Security Program
Organization An entity of any size, complexity, or positioning within an organizational structure (e.g., a federal agency, or, as appropriate, any of its operational elements).

See Glossary: Enterprise

  • NIST SP 800-37 Rev 1
Organization Seeking Certification (OSC) The entity that is going through CMMC assessment process to receive a level of certification for a given environment.
  • CMMC
Organizational Asset See Glossary: Asset
  • NISTIR 7693
  • NISTIR 7694
Organizational System(s) The term organizational system is used in many of CUI security requirements in NIST Special Publication 800-171.This term has a specific meaning regarding scope of applicability for CUI security requirements. requirements apply only to components of nonfederal systems that process, store, or transmit CUI, or that provide security protection for such components. appropriate scoping for security requirements is an important factor in determining protection-related investment decisions and managing security risk for nonfederal organizations that have responsibility of safeguarding CUI.
  • NIST SP 800-171 Rev 1
Organizationally Defined As determined by contractor being assessed. This can be applied to a frequency or rate at which something occurs within a given time period, or it could be associated with describing configuration of a contractor’s solution.
  • CMMC
Out-of-Scope Asset Out-of-Scope Assets cannot process, store, or transmit CUI becauseThe y are physically or logically separated from CUI Assets or are inherently unable to do so.
  • CMMC

P

Term Description Source
Patch An update to an operating system, application, or other software issued specifically to correct particular problems with software.
  • NIST SP 800-123
Penetration Testing (Pentesting) Security testing in which evaluators mimic real-world attacks in an attempt to identify ways to circumvent security features of an application, system, or network. Penetration testing often involves issuing real attacks on real systems and data, using same tools and techniques used by actual attackers. Most penetration tests involve looking for combinations of vulnerabilities on a single system or multiple systems that can be used to gain more access than could be achieved through a single vulnerability.
  • NIST SP 800-115
Periodically Occurring at regular intervals. As used in many practices within CMMC, interval length is organizationally defined to provided contractor flexibility, with an interval length of no more than one year.
  • Oxford Dictionary (adapted)
Personally Identifiable Information (PII) Information that can be used to distinguish or trace an individual’s identity, ei r alone or when combined with other information that is linked or linkable to a specific individual.
  • NIST SP 800-53 Rev 5
Plan An artifact or collection of artifacts that provides oversight for implementing defined CMMC policies. A plan should include a mission and/or vision statement, strategic goals/objectives, relevant standards and procedures, and people, funding, and tool resources needed to implement defined CMMC policies.
  • CMMC
Policy An artifact or collection of artifacts that establishes governance over implementation of CMMC practices and activities. policy should include stated purpose, defined scope, roles and responsibilities of activities covered by policy, and any included regulatory guidelines. policy should establish or direct establishment of procedures to carry out and meet intent of policy and should be endorsed by senior management to show its support of policy.
  • CMMC
Portable Storage Device A system component that can be inserted into and removed from a system, and that is used to store data or information (e.g., text, video, audio, and/or image data). Such components are typically implemented on magnetic, optical, or solid-state devices (e.g., floppy disks, compact/digital video disks, flash/thumb drives, external hard disk drives, and flash memory cards/drives that contain nonvolatile memory).
  • NIST SP 800-171 Rev 2
Practice An activity or set of activities that are performed to meet defined CMMC objectives.
  • CMMC
Privilege A right granted to an individual, a program, or a process.
  • CNSSI 4009, NIST SP 800-12 Rev 1
Privileged Account A user, system, or network account authorized (and,The refore, trusted) to perform security- relevant functions that ordinary accounts are not authorized to perform.
  • NIST SP 800-171 Rev. 2 (adapted)
Privileged User A user who is authorized (and,The refore, trusted) to perform security-relevant functions that ordinary users are not authorized to perform.
  • NIST SP 800-171 Rev. 2
Procedure The documented details for how an activity is implemented to achieve a desired outcome.A procedure should provide enough detail for a trained individual to perform activity.
  • CMMC
Process A procedural activity that is performed to implement a defined objective.
  • CMMC
Proxy (Web Proxy) An application that “breaks” connection between client and server. proxy accepts certain types of traffic entering or leaving a network and processes it and forwards it.

Note: This effectively closes straight path between internal and external networks making it more difficult for an attacker to obtain internal addresses and other details of organization’s internal network. Proxy servers are available for common Internet services; for example, a hypertext transfer protocol (HTTP/HTTPS) proxy used for Web access.

  • CNSSI 4009 (adapted)

R

Term Description Source
Real Time, Real-Time (modifier) Pertaining to performance of a computation during actual time that related physical process transpires so that results of computation can be used to guide physical process.
  • NIST SP 800-82 Rev. 2
  • NISTIR 6859
Recovery Actions necessary to restore data files of an information system and computational capability after a system failure.
  • CNSSI 4009
Red Team A group of people authorized and organized to emulate a potential adversary’s attack or exploitation capabilities against an enterprise’s security posture. Red Team’s objective is to improve enterprise Information Assurance by demonstrating impacts of successful attacks and by demonstrating what works for defenders (i.e., Blue Team) in an operational environment.
  • CNSSI 4009
Red Teaming The act(s) performed by a “red team” in order to identify weaknesses, vulnerabilities, procedural shortcomings, and misconfigurations within an organization’s cyber environment. Red Teaming includes creation of a “Rules of Engagement” document by which red team honors over course of their actions. It is expected that Red Team will produce a final report at end of event period.
  • CMMC
Regularly On a regular basis: at regular intervals.
  • Oxford Dictionary
Remote Access Access to an organizational system by a user (or a process acting on behalf of a user) communicating through an external network (e.g., Internet).
  • NIST SP 800-171 Rev. 2
Removable Media Portable data storage medium that can be added to or removed from a computing device or network.

Note: Examples include, but are not limited to: optical discs (CD, DVD, Blu-ray); external/removable hard drives; external/removable Solid-State Disk (SSD) drives; magnetic/optical tapes; flash memory devices (USB, eSATA, Flash Drive, Thumb Drive); flash memory cards (Secure Digital, CompactFlash, Memory Stick, MMC, xD); and other external/removable disks (floppy, Zip, Jaz, Bernoulli, UMD). See Glossary: Portable Storage Device

  • CNSSI 4009
Reporting [forensics] The final phase of computer and network forensic process, which involves reporting results of analysis; this may include describing actions used, explaining how tools and procedures were selected, determining what other actions need to be performed (e.g., forensic examination of additional data sources, securing identified vulnerabilities, improving existing security controls), and providing recommendations for improvement to policies, guidelines, procedures, tools, and other aspects of The forensic process.The formality of reporting step varies greatly depending on situation.
  • NIST SP 800-86
Residual Risk Portion of risk remaining after security measures have been applied.
  • NIST SP 800-33 (adapted)
Resilience The ability to prepare for and adapt to changing conditions and withstand and recover rapidly from disruptions. Resilience includes ability to withstand and recover from deliberate attacks, accidents, or naturally occurring threats or incidents.
  • PPD 21
Restricted Information Systems Systems (and associated IT components comprising system) that are configured based on government requirements (i.e., connected to something that was required to support a functional requirement) and are used to support a contract (e.g., fielded systems, obsolete systems, and product deliverable replicas).
  • CMMC
Risk A measure of extent to which an entity is threatened by a potential circumstance or event, and typically a function of:
  • The adverse impacts that would arise if circumstance or event occurs and
  • The likelihood of occurrence.

System-related security risks are those risks that arise from loss of confidentiality, integrity, or availability of information or systems. Such risks reflect potential adverse impacts to organizational operations, organizational assets, individuals, other organizations, and Nation.

  • FIPS 200 (adapted)
Risk Analysis The process of identifying risks to system security and determining likelihood of occurrence, resulting impact, and additional safeguards that mitigate this impact.Part of risk management and synonymous with risk assessment.
  • NIST SP 800-27
Risk Assessment
  • The process of identifying risks to organizational operations (including mission, functions, image, reputation), organizational assets, individuals, other organizations, and Nation, resulting from operation of a system.
  • Part of risk management, incorporates threat and vulnerability analyses, and considers mitigations provided by security controls planned or in place. Synonymous with risk analysis.
  • NIST SP 800-171
Risk Management (RM) The program and supporting processes to manage information security risk to organizational operations (including mission, functions, image, reputation), organizational assets, individuals, other organizations, and Nation, and includes:
  • establishing context for risk-related activities,
  • assessing risk,
  • responding to risk once determined, and
  • monitoring risk over time.
  • CNSSI 4009
Risk Mitigation Prioritizing, evaluating, and implementing The appropriate risk-reducing controls/ countermeasures recommended from risk management process.
  • CNSSI 4009
Risk Mitigation Plan A strategy for mitigating risk that seeks to minimize risk to an acceptable level.
  • CERT RMM v1.2
Risk Tolerance The level of risk an entity is willing to assume in order to achieve a potential desired result.
  • CNSSI 4009
Root-Cause Analysis An approach for determining underlying causes of events or problems as a means of addressing symptoms of such events asThe y manifest in organizational disruptions.
  • CERT RMM v1.2
Root Directory The top-level directory in a folder hierarchy.
  • CMMC

S

Term Description Source
Safeguards The protective measures prescribed to meet security requirements (i.e., confidentiality, integrity, and availability) specified for an information system. Safeguards may include security features, management constraints, personnel security, and security of physical structures, areas, and devices. Synonymous with security controls and countermeasures.
  • FIPS 200
Sandboxing A restricted, controlled execution environment that prevents potentially malicious software, such as mobile code, from accessing any system resources except those for which software is authorized.
  • CNSSI 4009
Scanning Sending packets or requests to another system to gain knowledge about asset, processes, services, and operations.
  • CNSSI 4009 (adapted)
Security Assessment See Glossary: Security Control Assessment
Security Control Assessment (Security Assessment, Security Practice Assessment) The testing or evaluation of security controls to determine extent to which controls are implemented correctly, operating as intended, and producing desired outcome with respect to meeting security requirements for a system or organization.
  • CNSSI 4009 (adapted)
Security Domain An environment or context that includes a set of system resources and a set of system entities that have right to access resources as defined by a common security policy, security model, or security architecture.
  • CNSSI 4009
Security Operations Center (SOC) A centralized function within an organization utilizing people, processes, and technologies to continuously monitor and improve an organization's security posture while preventing, detecting, analyzing, and responding to cybersecurity incidents.
  • CMMC
Security Policy Security policies define objectives and constraints for security program. Policies are created at several levels, ranging from organization or corporate policy to specific operational constraints (e.g., remote access). In general, policies provide answers to questions “what” and “why” without dealing with “how.” Policies are normally stated in terms that are technology-independent.
  • NIST SP 800-82 Rev 2
Security Protection Assets Security provide security functions or capabilities within contractor’s CMMC Assessment Scope.
  • CMMC
Security Practice Assessment See Glossary: Security Control Assessment
Sensitive Information Information where loss, misuse, or unauthorized access or modification could adversely affect national interest or conduct of federal programs, or privacy to which individuals are entitled under 5 U.S.C. Section 552a (The Privacy Act).
  • NIST SP 800-53 Rev 4 (adapted)
Separation of Duties Refers to principle that no user should be given enough privileges to misuse system onThe ir own. For example, person authorizing a paycheck should not also be one who can prepareThe m.Separation of duties can be enforced ei r statically (by defining conflicting roles, i.e., roles which cannot be executed by same user) or dynamically (by enforcing control at access time).
  • NIST SP 800-192
Service Continuity Plan A service-specific plan for sustaining services and associated assets under degraded conditions.
  • CERT RMM v1.2
SHA-256 A Secure Hash Algorithm (SHA) that produces a condensed representation of electronic data, or message digest, 256 bits in length.
  • FIPS 180-4
Situational Awareness (SA) Within a volume of time and space, perception of an enterprise’s security posture and its threat environment; comprehension/meaning of both taken toge r (risk); and projection ofThe ir status into near future.
  • CNSSI 4009
Specialized Asset The following are considered specialized assets for CMMC: Government Property, Internet of Things (IoT) or Industrial Internet of Things (IIoT), Operational Technology (OT), and Restricted Information Systems.
  • CMMC
Split Tunneling The process of allowing a remote user or device to establish a non-remote connection with a system and simultaneously communicate via some other connection to a resource in an external network. This method of network access enables a user to access remote devices (e.g., a networked printer) at same time as accessing uncontrolled networks.
  • NIST SP 800-171
Spyware Software that is secretly or surreptitiously installed into an information system to ga r information on individuals or organizations withoutThe ir knowledge; a type of malicious code.
  • NIST SP 800-53 Rev 5
Standards A document, established by consensus and approved by a recognized body, that provides for common and repeated use, rules, guidelines or characteristics for activities or their results, aimed at achievement of optimum degree of order in a given context.

Note: Standards should be based on consolidated results of science, technology and experience, and aimed at promotion of optimum community benefits.

  • NISTIR 8074 Vol. 2
Standard Process An operational definition of basic process that guides establishment of a common process in an organization. A standard process describes fundamental process elements that are expected to be incorporated into any defined process. It also describes relationships (e.g., ordering, interfaces) amongThe se process elements.

See Glossary: Defined Process

  • CERT RMM v1.2
Subnetwork A subordinate part of an organization’s enterprise network.
  • CMMC
Supply Chain A system of organizations, people, activities, information, and resources, possibly international in scope, that provides products or services to consumers.
  • CNSSI 4009
Supply Chain Attack Attacks that allow adversary to utilize implants or other vulnerabilities inserted prior to installation in order to infiltrate data, or manipulate information technology hardware, software, operating systems, peripherals (information technology products) or services at any point during life cycle.
  • CNSSI 4009
Supply Chain Risk Management (SCRM) A systematic process for managing supply chain risk by identifying susceptibilities, vulnerabilities, and threats throughout supply chain and developing mitigation strategies to combat those threats whe r presented by supplier, supplied product and its subcomponents, or supply chain (e.g., initial production, packaging, handling, storage, transport, mission operation, and disposal).
  • CNSSD No. 505
Sustain Maintain a desired operational state.
  • CERT RMM v1.2
System Assets Any software, hardware (IT, OT, IoT), data, administrative, physical, communications, or personnel resource within an information system.
  • CNSSI 4009
System Boundary The scope of system and environment being assessed. All components of an information system to be authorized for operation by an authorizing official and excludes separately authorized systems, to which information system is connected. System Boundary is equivalent to defined CMMC Assessment Scope.

See Glossary: CMMC Assessment Scope

  • CNSSI 4009-2015 under authorization boundary NIST SP 800-53 Rev. 4
  • NIST SP 800-53A Rev. 1
  • NIST SP 800-37 Rev. 1
System Integrity The quality that a system has when it performs its intended function in an unimpaired manner, free from unauthorized manipulation of system, whe r intentional or accidental.
  • NIST SP 800-27
System Interconnection A system interconnection is defined as direct connection of two or more IT systems for purpose of sharing data and other information resources.
  • NIST 800-47
System Security Plan (SSP) The formal document prepared by information system owner (or common security controlsThe ownerThe forThe inheritedThe controls)The thatThe providesThe anThe overviewThe ofThe security requirements for system and describes security controls in place or planned for meeting those requirements. plan can also contain as supporting appendices or as references, other key security-related documents such as a risk assessment, privacy impact assessment, system interconnection agreements, contingency plan, security configurations, configuration management plan, and incident response plan.
  • CNSSI 4009

T

Term Description Source
Tampering An intentional but unauthorized act resulting in modification of a system, components of systems, its intended behavior, or data.
  • NIST SP 800-53 Rev 5
Test Equipment Hardware and/or associated IT components used in testing of products, system components, and contract deliverables (e.g., oscilloscopes, spectrum analyzers, power meters, and special test equipment).
  • CMMC
Threat Any circumstance or event with potential to adversely impact organizational operations (including mission, functions, image, or reputation), organizational assets, individuals, other organizations, or Nation through an information system via unauthorized access, destruction, disclosure, modification of information, and/or denial of service.
  • NIST SP 800-30 Rev 1
Threat Actor An individual or a group posing a threat.
  • NIST SP 800-150
Threat Intelligence Threat information that has been aggregated, transformed, analyzed, interpreted, or enriched to provide necessary context for decision-making processes.
  • NIST SP 800-150
Threat Monitoring Analysis, assessment, and review of audit trails and other information collected for purpose of searching out system events that may constitute violations of system security.
  • CNSSI 4009
Trigger A set of logic statements to be applied to a data stream that produces an event when an anomalous incident or behavior occurs.
  • CNSSD No. 504 (adapted)
Trojan Horse A computer program that appears to have a useful function, but also has a hidden and potentially malicious function that evades security mechanisms, sometimes by exploiting legitimate authorizations of a system entity that invokes program.
  • CNSSI 4009
Tunneling Technology enabling one network to send its data via another network’s connections.Tunneling works by encapsulating a network protocol within packets carried by second network.
  • CNSSI 4009


U

Term Description Source
Unauthorized Access Any access that violates stated security policy.
  • CNSSI 4009
User Individual, or (system) process acting on behalf of an individual, authorized to access a system.
  • NIST SP 800-53 Rev 5

V

Term Description Source
Virus A computer program that can copy itself and infect a computer without permission or knowledge of user. A virus might corrupt or delete data on a computer, use e-mail programs to spread itself to other computers, or even erase everything on a hard disk.

See Glossary: Malicious Code

  • CNSSI 4009
Vulnerability Weakness in an information system, system security procedures, internal controls, or implementation that could be exploited by a threat source.
  • NIST SP 800-30 Rev 1
Vulnerability Assessment Systematic examination of an information system or product to determine adequacy of security measures, identify security deficiencies, provide data from which to predict effectiveness of proposed security measures, and confirm adequacy of such measures after implementation.
  • CNSSI 4009
Vulnerability Management An Information Security Continuous Monitoring (ISCM) capability that identifies vulnerabilities [Common Vulnerabilities and Exposures (CVEs)] on devices that are likely to be used by attackers to compromise a device and use it as a platform from which to extend compromise to network.
  • NISTIR 8011 Vol. 1

W

Term Description Source
Web Proxy See Glossary: Proxy
Whitelist An approved list or register of entities that are provided a particular privilege, service, mobility, access or recognition.

An implementation of a default deny-all or allow-by-exception policy across an enterprise environment, and a clear, concise, timely process for adding exceptions when required for mission accomplishments.

  • CNSSI 1011