AU-10 Non-Repudiation
Provide irrefutable evidence that an entity performed an action; HIGH baseline.
2
artefacts
1
held by a system
0
at each review
easy
to go live
SIEM / log platform
where the evidence lives
teal = a system already holds it · olive = produced at each review
system holds itEvidence a system already holds
- Digital signature on logs · SIEM / log platform
periodic reviewEvidence produced at each review
none for this control
governing documentDocuments that govern the control
- Action attribution · Policy repository / GRC workspace
First move
Automate the pull from your SIEM / log platform. Retention and alert rules exported from the SIEM; review evidence is the closed-alert record with reviewer and time.
Common gaps auditors find
- No non-repudiation mechanism
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-9(4) Access by Subset of Privileged Users · AU-11 Audit Record Retention