Counterintelligence and Counterespionage

Counterintelligence noun - 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.

Counterespionage and counterintelligence are semantically related. In some cases you can use "Counterespionage" instead a noun "Counterintelligence".

Counterespionage noun - Spying on the spies.

Counterintelligence and counterespionage are semantically related. You can use "Counterintelligence" instead a noun "Counterespionage".