intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism

Those activities which are concerned with identifying and counteracting the threat to security posed by hostile services, organizations, or by individuals engaged in espionage, sabotage, subversion, or terrorism (Joint Pub 1-02).

1. That phase of intelligence covering all activity designed to neutralize the effectiveness of adversary intelligence collection activities. 2. Those activities that are concerned with identifying and counteracting the security threat posed by hostile intelligence services, organizations, or by individuals engaged in espionage, sabotage, subversion, or terrorism. (DOD JP 1997a).