A CUI incident is defined as what?

• A. Any suspected or confirmed unauthorized disclosure, loss, or compromise of CUI requiring prompt reporting.
• B. A scheduled system maintenance event
• C. A misaddressed email without sensitive data
• D. A non-issue data discrepancy

Answer: (A)

A CUI incident is any suspected or confirmed event that involves unauthorized disclosure, loss, or compromise of Controlled Unclassified Information and requires prompt reporting. This definition captures both real incidents and suspected ones, underscoring the need to report quickly to mitigate harm and trigger the appropriate response actions. It focuses on situations where CUI is exposed or could be exposed, not on routine tasks or harmless miscommunications.

Think of it as the moment you might be handling CUI and something goes wrong or could go wrong—like a lost USB drive containing CUI, or a misdirected email that ends up exposing sensitive information. The key elements are CUI involvement, the risk or occurrence of disclosure, loss, or compromise, and the requirement to report promptly.

The other scenarios don’t fit because they don’t involve CUI disclosure, loss, or compromise that triggers mandatory reporting. A scheduled maintenance event is a routine operation with no exposure of CUI. A misaddressed email that doesn’t contain sensitive data isn’t exposing CUI. A non-issue data discrepancy isn’t an incident involving CUI.