NIST SP 800-171 Rev 2 · 3.8 Media Protection
3.8.9 Protect backup CUI
Protect the confidentiality of backup CUI at storage locations.
- SPRS weight
- 1
- 1 point deducted from 110 when not implemented.
- CMMC level
- L2
- Level 2 only; not among the 17 Level 1 practices.
- Assessment objectives
- 1
- From NIST SP 800-171A, each one a “determine if” an assessor answers.
What an assessor checks
NIST SP 800-171A breaks 3.8.9 into 1 objectives. Every one has to be met for the requirement to be met; a partial answer scores as not implemented.
- Determine if the confidentiality of backup CUI is protected at storage locations.
- Examine
- [SELECT FROM: Procedures addressing system backup; security plan; backup storage location(s); system backup logs or records; other relevant documents or records].
- Interview
- [[SELECT FROM: Personnel with system backup responsibilities; personnel with information security responsibilities].
- Test
- [SELECT FROM: Organizational processes for conducting system backups; mechanisms supporting or implementing system backups].
If it is open: POA&M eligibility
May be carried on a Level 2 POA&M · 1 point deducted
A 1-point requirement outside the six named exclusions - eligible to carry, and NOT MET until a closeout assessment confirms it.
A POA&M is only permitted at a score of 88 or above, and closes in one 180-day window. Check a full gap list or compute your score.
Where 3.8.9 maps
NIST SP 800-53 Rev 5
- CP-6 Alternate Storage Site
- CP-9 System Backup
NIST CSF 2.0
- Data-at-rest is protected Data Security
- Recovery processes and procedures are executed Recovery Planning
SOC 2
No direct mapping.
Query it from your own tools
This page and the MacTech CMMC MCP server render the same dataset. Ask your assistant and it will answer from the methodology, not from memory.
lookup_control 3.8.9 get_assessment_objectives 3.8.9 generate_poam_entries ["3.8.9"]
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