What evidence do auditors commonly ask for on AU.L2-3.3.8 Audit Protection?

Access controls on log stores and logging tools; Evidence of write once, forwarding or integrity protection for logs; Review showing administrators cannot silently delete their own activity.

What is the most common gap auditors find on AU.L2-3.3.8?

Local administrators able to clear logs without trace

CMMC 2.0 · Audit and Accountability

`AU.L2-3.3.8` Audit Protection

Prevent unauthorized access to, modification of, and deletion of both audit records and the tools that produce them.

Source: CMMC 2.0, AU.L2-3.3.8. 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

hard

to go live

Policy repository / GRC workspace

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

none for this control

periodic reviewEvidence produced at each review

Evidence of write once, forwarding or integrity protection for logs · SIEM / log platform
Review showing administrators cannot silently delete their own activity · Policy repository / GRC workspace

governing documentDocuments that govern the control

Access controls on log stores and logging tools · Policy repository / GRC workspace

First move

No system holds this evidence for you: it is people and documents. Reminders and routing to the owner still save time. Put the document under version control with an owner and review date, and log each review as a record with reviewer and date.

Common gaps auditors find

Local administrators able to clear logs without trace
Log integrity protection absent
Logging tool configuration modifiable by general administrators

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

AU.L2-3.3.7 Time Stamps & Synchronization · AU.L2-3.3.9 Audit Management