What this requirement asks
Disable identifiers after a defined period of inactivity.
This is a CMMC Level 2 requirement in the Identification & Authentication family, drawn from NIST SP 800-171 Rev. 2. An assessor evaluates it objective by objective — every objective below must be supported by evidence, not just described in a policy.
Assessment objectives (2)
- 3.5.6[a] — a period of inactivity after which an identifier is disabled is defined
- 3.5.6[b] — identifiers are disabled after the defined period of inactivity
What an assessor examines
Examine:
- Identification and authentication policy
- procedures addressing identifier management
- procedures addressing account management
- system security plan
- system design documentation
- system configuration settings and associated documentation
- list of system accounts
- list of identifiers generated from physical access control devices
- other relevant documents or records
Interview:
- Personnel with identifier management responsibilities
- personnel with information security responsibilities
- system or network administrators
- system developers
Test:
- Mechanisms supporting or implementing identifier management
Evidence that defends it
Show policy and actual enforcement
Check your readiness
Score this requirement against your own environment with the Level 2 self-assessment checklist, or estimate your SPRS score with the free CMMC compliance tool. Self-reported answers are planning signals only — they do not establish a verified or assessor-accepted result.