What evidence do auditors commonly ask for on AC.L2-3.1.22 Control Public Information?

Review and approval process for content published publicly; Designated reviewer authorizations and review records; Evidence of periodic scanning of public sites for CUI.

What is the most common gap auditors find on AC.L2-3.1.22?

Publication approval informal or undocumented

CMMC 2.0 · Access Control

`AC.L2-3.1.22` Control Public Information

Control CUI that is posted to or processed on publicly accessible systems so CUI is not released to the public.

Source: CMMC 2.0, AC.L2-3.1.22. 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

Vulnerability scanner / patch tooling

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

Evidence of periodic scanning of public sites for CUI · Vulnerability scanner / patch tooling

periodic reviewEvidence produced at each review

Designated reviewer authorizations and review records · Identity provider / directory

governing documentDocuments that govern the control

Review and approval process for content published publicly · Policy repository / GRC workspace

First move

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

Common gaps auditors find

Publication approval informal or undocumented
No periodic check of already published content
Public facing systems not identified as in scope

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.L2-3.1.21 Portable Storage Use · AT.L2-3.2.1 Role-Based Risk Awareness