反情報

Also known as counter-espionage, counterspy

thumb|Civilian photo technicians (in back of jeep) working for Counter Intelligence Corps are accounted for at a Security checkpoint|checkpoint in [[Potsdam, Germany, on July 14, 1945]] 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, organ