AU-9 Protection of audit information
Requires audit information and the audit logging tools themselves to be protected from unauthorized access, modification and deletion, and requires defined personnel to be alerted when such access, modification or deleti
4
artefacts
2
held by a system
2
at each review
easy
to go live
Identity provider / directory
where the evidence lives
teal = a system already holds it · olive = produced at each review
system holds itEvidence a system already holds
- Access control configuration for the log store and logging tools · Identity provider / directory
- Alerting configuration for unauthorized access to or modification of audit data · SIEM / log platform
periodic reviewEvidence produced at each review
- Evidence of write once, immutable or off system storage of audit records · Policy repository / GRC workspace
- Review showing administrators cannot delete records covering their own activity · Policy repository / GRC workspace
governing documentDocuments that govern the control
none for this control
First move
Automate the pull from your Identity provider / directory. Scheduled export of users, roles and MFA state from the directory; access-review completion pulled from the IdP, not a spreadsheet.
Common gaps auditors find
- System administrators can clear the logs on the systems they administer
- Logs held only on the originating host, so compromise destroys the evidence
- No alert on log deletion or on the logging service being stopped
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 sheetAU-8 Time stamps · AU-10 Non-repudiation. Provide irrefutable evidence that an individual (or process acting on behalf of an individual) has performed [organization-defined]