LLMResponse AC.L2-3.1.1.e

Evidence Types and Assessment Approaches for AC.L2-3.1.1 Assessment Objective [e]

Ranking of Evidence Types for Assessment Objective [e]

For the assessment objective "[e] system access is limited to processes acting on behalf of authorized users," I recommend prioritizing evidence types in this order:

1. **Artifacts**: These provide the strongest evidence for this process-focused objective, including:

  - System logs showing process execution with user attribution
  - Service account configurations and permissions
  - Scheduled task configurations with owner information
  - Process monitoring tool outputs
  - Automated process registration records

2. **Screen Share**: Observing system configurations and monitoring tools provides strong validation:

  - Demonstrations of process authorization controls
  - Viewing system process attribution in real-time
  - Observing service account configurations
  - Watching process monitoring dashboards

3. **Documents**: Supporting documentation for process control:

  - Process authorization procedures
  - Service account management policies
  - Automated task approval workflows
  - System security plans describing process controls

4. **Physical Review**: Limited relevance for this objective but might include:

  - Physical security controls that protect systems running automated processes
  - Server room access restrictions for systems executing privileged processes

Prioritizing Assessment Approaches

For assessment objective [e], I recommend prioritizing the three assessment approaches as follows:

1. **Test**: This should be your primary approach for verifying process limitations:

  - Test that unauthorized processes cannot execute with elevated privileges
  - Verify that service accounts have appropriate restrictions
  - Confirm that scheduled tasks run with proper user context
  - Check that process monitoring tools correctly identify process ownership
  - Validate that unauthorized processes are blocked from execution

2. **Examine**: Follow with examination of supporting configurations:

  - Review service account permissions and limitations
  - Examine process monitoring configurations
  - Check system logs for process execution records
  - Review automated task settings
  - Examine access control lists for process execution

3. **Interview**: Complete your assessment with technical interviews:

  - Speak with system administrators who configure automated processes
  - Interview security personnel about process control strategies
  - Discuss with IT staff how they monitor and restrict process execution

This prioritization focuses first on testing the actual operational effectiveness of controls limiting processes to those acting on behalf of authorized users, followed by examining the underlying configurations, and finally confirming understanding through interviews with technical personnel responsible for implementation.