LLMResponse CM.L2-3.4.5.d

Assessment for Objective [d]: Physical access restrictions associated with changes to the system are enforced

Evidence Types Ranking (Most to Least Valuable)

1. **Physical Review**: Most valuable evidence

  - Direct observation of physical security controls
  - Verification of access control mechanisms
  - Observation of escort procedures
  - Inspection of physical barriers and locks

2. **Artifacts**: Strong supporting evidence

  - Access logs showing enforcement
  - Badge/key card access records
  - Security incident reports related to unauthorized access
  - Video surveillance footage

3. **Screen Share**: Valuable but secondary

  - View monitoring systems for physical access
  - Observe access control management systems
  - See real-time enforcement of restrictions

4. **Documents**: Supporting evidence

  - Enforcement procedures (though less important than actual enforcement)
  - Records of access denials
  - Documentation of security violations

Assessment Approach Priority

1. **Test** (Primary approach)

  - Test physical access control mechanisms
  - Verify badge systems function as intended
  - Check that unauthorized individuals cannot gain access
  - Confirm escort procedures are followed
  - Validate that access logs record entry/exit accurately

2. **Physical Review** (Critical complementary approach)

  - Directly observe physical barriers and controls
  - Inspect server room access controls
  - Check datacenter security measures
  - Observe staff compliance with access procedures

3. **Examine** (Important supporting approach)

  - Review access logs for appropriate restrictions
  - Check security violation reports
  - Verify badge access records match authorized personnel lists
  - Examine incident reports for access control failures

For this enforcement objective, prioritize testing actual controls and direct physical review to verify that defined restrictions are properly implemented and functioning. Document examination provides supporting evidence but is less conclusive about actual enforcement than direct testing and observation of controls in action.