What does "FOR OFFICIAL USE ONLY" signify in terms of information security?

The designation "FOR OFFICIAL USE ONLY" (FOUO) signifies that the information is sensitive but not classified. This means that while the data is not deemed classified and does not require the same level of protection as classified information, it is still important enough to warrant restriction on access to prevent unauthorized disclosure. FOUO is used to protect unclassified information that may be sensitive in nature or could cause harm to the government's interests if shared indiscriminately.

In this context, "FOR OFFICIAL USE ONLY" serves as a warning that the information should be handled with care and is intended solely for use by government personnel. This helps manage the flow of information and ensures that sensitive non-public data is kept secure while avoiding confusion with classified information categories. Understanding this concept is crucial for maintaining proper protocols in information security practices.