NIST SP 800-171
Control 3.8.2
Limit Access to CUI on System Media
CMMC-RP Certified Team
24+ Years Experience
2,500+ Clients Served
Official Requirement
Limit access to CUI on information system media to authorized users.
What This Means in Plain English
Only people who need access to CUI media for their job should be able to access it. This applies to both digital media (encrypted drives, backup tapes) and paper documents.
How Petronella Implements This Control
Petronella Technology Group implements this control through:
- Access control lists restricting who can check out or access CUI media
- Encrypted digital media requiring authorized credentials to decrypt and access
- CUI document distribution lists controlling who receives paper copies
- Locked storage with access restricted to authorized custodians only
- ComplianceArmor tracking media access requests and approvals
Assessment Guidance
Assessors will verify that media access is restricted to authorized individuals, test that encryption prevents unauthorized access to digital media, review access logs for media storage areas, and check that distribution of CUI media is controlled.
Common Implementation Gaps
- No access restrictions on CUI media storage
- Digital media unencrypted and accessible to anyone with physical access
- Paper CUI documents freely accessible in shared areas
- No tracking of who accesses CUI media
- Former employees retaining CUI media after role changes
Cross-Framework Mapping
| Framework | Mapped Controls |
|---|---|
| NIST SP 800-53 | MP-2 |
| HIPAA | 164.310(d)(1) - Device and Media Controls |
| PCI DSS | Req 9.6 - Control physical distribution of media |
Need Help Implementing 3.8.2?
Our CMMC-RP certified team can assess your current compliance posture and build a remediation plan.
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