Controlled Unclassified Information (CUI) refers to unclassified information that requires safeguarding and dissemination controls, consistent with applicable law, regulation, or government-wide policy. It is a term used in the context of information security and handling procedures, particularly within the U.S. Department of Defense. CUI includes various categories of unclassified information that need to be protected due to their sensitive nature, such as privacy information, proprietary business information, and certain types of law enforcement information