Topic summary
Counter-intelligence
Extracted from the Wikipedia article Counterintelligence.
Counterintelligence (counter-intelligence) and its primary subfield, counterespionage (counter-espionage), are activities aimed at protecting an agency's intelligence program from an opposition's intelligence service. It includes gathering information and conducting activities to prevent espionage, sabotage, assassinations or other intelligence activities conducted by, for, or on behalf of foreign powers, organizations or persons.