OIS-04 Segregation of Duties
Separate conflicting duties on the basis of the documented risk assessment, at minimum across rights administration and access approval, change development, testing and release, and system operation, and where separation
4
artefacts
1
held by a system
1
at each review
moderate
to go live
Document repository
where the evidence lives
teal = a system already holds it · olive = produced at each review
system holds itEvidence a system already holds
- Sample of change records showing different individuals built, tested and released the change · Document repository
periodic reviewEvidence produced at each review
- Configuration of the compensating monitoring rules plus evidence that someone reviews their output · SIEM / log platform
governing documentDocuments that govern the control
- Conflict matrix mapping incompatible functions to job roles and to system entitlements · Policy repository / GRC workspace
- Documented justification and acceptance for each duty conflict that cannot be separated · Document repository
First move
Start with the 1 of 4 artefacts that already live in a system (Document repository); keep the periodic reviews but log each one as a dated record with a named reviewer.
Common gaps auditors find
- Developers retain standing deployment rights into the production environment
- Administrators raise and approve their own entitlement requests
- Compensating monitoring defined on paper with no reviewer and no sign off
- Analysis covers business applications only and ignores infrastructure operations
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 sheetOIS-03 Interfaces and Dependencies · OIS-05 Contact with Relevant Government Agencies and Interest Groups