Readiness check
← CMMC Level 2
CMMC Level 2 / Control family · AU

Audit & Accountability

That system activity is logged, attributable to individuals, and reviewable — so misuse can be detected and reconstructed.

9
requirements in this family
What it requires

The 9 requirements, in plain language.

3.3.1 System Auditing

Create and retain system audit logs and records to the extent needed to enable the monitoring, analysis, investigation, and reporting of unlawful or unauthorized system activity

3.3.2 User Accountability

Ensure that the actions of individual system users can be uniquely traced to those users, so they can be held accountable for their actions

3.3.3 Event Review

Review and update logged events

3.3.4 Audit Failure Alerting

Alert in the event of an audit logging process failure

3.3.5 Audit Correlation

Correlate audit record review, analysis, and reporting processes for investigation and response to indications of unlawful, unauthorized, suspicious, or unusual activity

3.3.6 Reduction & Reporting

Provide audit record reduction and report generation to support on-demand analysis and reporting

3.3.7 Authoritative Time Source

Provide a system capability that compares and synchronizes internal system clocks with an authoritative source to generate time stamps for audit records

3.3.8 Audit Protection

Protect audit information and audit logging tools from unauthorized access, modification, and deletion

3.3.9 Audit Management

Limit management of audit logging functionality to a subset of privileged users

NIST SP 800-171 Rev 2 — Family AU. CMMC Level 2 assesses each requirement's objectives via a C3PAO. NIST SP 800-171r2 →
How Aletheon covers it

One owner across the whole family — built, run, and proven.

Enclave builds these controls into the boundary as code; Cadence keeps them enforced between assessments; Attest proves them to the C3PAO against every objective.

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