What evidence do auditors commonly ask for on MP.L2-3.8.6 Portable Storage Encryption?

Encryption configuration for portable and transported digital media; Evidence of encryption status for media in transit; Documented alternative physical safeguards where encryption is not used.

What is the most common gap auditors find on MP.L2-3.8.6?

Encryption assumed but not verified per device

CMMC 2.0 · Media Protection

`MP.L2-3.8.6` Portable Storage Encryption

Apply cryptographic protection to CUI held on digital media during transport, unless equivalent alternative physical safeguards protect it instead.

Source: CMMC 2.0, MP.L2-3.8.6. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open CMMC 2.0 in the compliance library.

artefacts

held by a system

at each review

easy

to go live

Cloud console / configuration management

where the evidence lives

teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

Encryption configuration for portable and transported digital media · Cloud console / configuration management
Evidence of encryption status for media in transit · Data governance / DLP tooling

periodic reviewEvidence produced at each review

none for this control

governing documentDocuments that govern the control

Documented alternative physical safeguards where encryption is not used · Policy repository / GRC workspace

First move

Automate the pull from your Cloud console / configuration management. Configuration snapshots and change history from the cloud console or IaC repository, diffed against the baseline.

Common gaps auditors find

Encryption assumed but not verified per device
Alternative safeguards claimed without documentation
Backup media shipped unencrypted

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

MP.L2-3.8.5 Media Accountability · MP.L2-3.8.7 Removable Media