counter-intelligence

n [U] measures taken to stop an enemy country from finding out one's secrets, to give them false information, etc 反情报措施.

counsellor, counsellor (US also counselor), counselor, count, count for, count in, count noun (also `countable noun), count on, count out, count up, countable, countdown, countenance, counter, counter-, counter-attack, counter-attraction, counter-clockwise, counter-espionage, counter-insurgency, counter-intuitive, counter-irritant, counter-offer, counter-productive, counter-productively, counter-revolution, counter-revolutionary, counter-tenor, counteract, counteraction, counterargument, counterbalance, counterbalancing, counterblast, counterclaim, counterfeit, counterfoil, countermand, countermeasure, counterpane,