SU.4 Remove Out-of-Support Software
Remove software that is no longer receiving security updates from in-scope devices, or fully segregate it from the rest of the network.
3
artefacts
1
held by a system
1
at each review
moderate
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
- EOL removal log · SIEM / log platform
periodic reviewEvidence produced at each review
- Segregated VLAN evidence · Document repository
governing documentDocuments that govern the control
- Compensating control documentation · Document repository
First move
Start with the 1 of 3 artefacts that already live in a system (SIEM / log platform); keep the periodic reviews but log each one as a dated record with a named reviewer.
Common gaps auditors find
- EOL kept on production network
- no plan to retire
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 sheetSU.3 Critical and High Updates within 14 Days · SU.5 Firmware Updates