MP-3 Media Marking
Mark system media indicating distribution limitations, handling caveats, security markings.
6
artefacts
2
held by a system
0
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
- Media transport chain of custody logs · SIEM / log platform
- Encryption configuration for portable storage devices · Endpoint management (MDM / EDR)
periodic reviewEvidence produced at each review
none for this control
governing documentDocuments that govern the control
- Control implementation statement for MP-3 citing the system mission and inheritance from common controls · Policy repository / GRC workspace
- Media inventory and labelling scheme by data classification · Policy repository / GRC workspace
- Sanitisation and destruction certificates from approved disposal vendor · Vendor register / contract repository
- Removable media usage policy and DLP enforcement evidence · Policy repository / GRC workspace
First move
Start with the 2 of 6 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
- Media classification labels missing on physical assets
- Decommissioned drives stored unencrypted while awaiting destruction
- USB usage permitted without DLP inspection or encryption
- Destruction certificates lack serial numbers tying back to inventory
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 sheet