Controlled Unclassified Information—US designation for sensitive information requiring protection.
Controlled Unclassified Information (CUI) is a US government designation for unclassified information requiring safeguarding or dissemination controls. CUI replaced numerous agency-specific markings with a unified system. CUI includes technical data, privacy information, and other sensitive categories. US defence contractors (and their supply chains) must protect CUI according to NIST SP 800-171 requirements. CUI handling requirements affect UK companies working on US defence programmes.
Why It Matters
The DSC Perspective:
CUI requirements increasingly affect UK companies in US defence supply chains. CMMC certification verifies CUI protection. Understand CUI if pursuing US defence opportunities.