data compromise
1. (I) A security incident in which information is exposed to
potential unauthorized access, such that unauthorized disclosure,
alteration, or use of the information might have occurred.
(Compare: security compromise, security incident.)
2. (O) /U.S. DoD/ A "compromise" is a "communication or physical
transfer of information to an unauthorized recipient." [DoD5]
3. (O) /U.S. Government/ "Type of [security] incident where
information is disclosed to unauthorized individuals or a
violation of the security policy of a system in which unauthorized
intentional or unintentional disclosure, modification,
destruction, or loss of an object may have occurred." [C4009]