Assessing Security Requirements for Controlled Unclassified Information (CUI): NIST Special Publication 800-171A, Revision 3. Small Business Primer
NIST released SP 800-171A Revision 3 on 16 September 2026, offering a small‑business primer on assessing CUI security requirements.
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What happened
NIST published Special Publication 800-171A Revision 3 on 16 September 2026. The document gives small‑business owners a high‑level overview of how to assess security controls for Controlled Unclassified Information. It references related NIST publications and includes supplemental material for cybersecurity. No new regulatory penalties are introduced.
Why it matters
Firms that handle CUI under federal contracts should review the new guidance to ensure their security assessments align with the updated controls.
Business impact
Adopting the revised assessment framework may require updating internal audit procedures and training programs.
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