How should a CUI paper document be marked?

• A. Clearly display the CUI designation, category, and any handling/dissemination restrictions on the cover/header and footer.
• B. Mark only the cover
• C. Mark only the header
• D. Not necessary to mark a paper document

Answer: (A)

Clear, visible markings on every page are essential for handling CUI correctly. The right approach is to display the CUI designation, category, and any handling or dissemination restrictions on the cover, and also on the header and footer of every page. This ensures the sensitivity level and any constraints are immediately obvious to anyone who touches the document, even if pages are separated, copied, or forwarded. Marking only the cover risks pages without markings being shared, scanned, or discarded without notice, while marking only the header leaves the cover itself without a visible cue. Not marking a document at all would be noncompliant. By placing the markings on the cover as well as the header and footer on every page, the document stays properly labeled throughout its entire lifecycle.