What evidence do auditors commonly ask for on AC.L2-3.1.10 Session Lock?

Configured inactivity timeout and session lock settings; Evidence the lock hides screen content, for example screensaver policy; Deployment coverage across workstations and servers.

What is the most common gap auditors find on AC.L2-3.1.10?

Timeout configured but pattern hiding not enforced

CMMC 2.0 · Access Control

`AC.L2-3.1.10` Session Lock

Lock the user session after a defined period of inactivity and conceal previously displayed content behind a pattern hiding display until the user reauthenticates.

Source: CMMC 2.0, AC.L2-3.1.10. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open CMMC 2.0 in the compliance library.

artefacts

held by a system

at each review

moderate

to go live

Identity provider / directory

where the evidence lives

teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

Configured inactivity timeout and session lock settings · Identity provider / directory

periodic reviewEvidence produced at each review

none for this control

governing documentDocuments that govern the control

Evidence the lock hides screen content, for example screensaver policy · Policy repository / GRC workspace
Deployment coverage across workstations and servers · Policy repository / GRC workspace

First move

Start with the 1 of 3 artefacts that already live in a system (Identity provider / directory); keep the periodic reviews but log each one as a dated record with a named reviewer.

Common gaps auditors find

Timeout configured but pattern hiding not enforced
Users permitted to disable the lock locally
Servers and shared terminals excluded

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

Build my evidence sheet

AC.L2-3.1.9 Privacy & Security Notices · AC.L2-3.1.11 Session Termination