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Longman Dictionary of Contemporary English
counter-espionage
noun
EXAMPLES FROM CORPUS
▪ But the republican counter-espionage was highly organized, and early in 1814 he was arrested, tried and condemned to death.
▪ They're political - a small counter-espionage unit.
▪ Without ciphers and diplomatic bags, espionage and counter-espionage actions were likely to be circumscribed.
Wikipedia
Counter-Espionage

Counter-Espionage is a 1942 American comedy film directed by Edward Dmytryk. Counter-Espionage was the ninth film in Columbia's Lone Wolf series, based on characters created by Louis Joseph Vance. It is also known as The Lone Wolf in Scotland Yard.

Usage examples of "counter-espionage".

An espionage agent, counter-espionage -- damned things mean the same to me.

I'd get no Oscars for counter-espionage but as an arsonist I was neck and neck with the best.

I'm a counter-espionage agent and humanitarian principles don't matter a damn to me.

His identity was also known to the chiefs of espionage and counter-espionage -- it had to be.

You know that this counter-espionage and rescue mission was only a cover for the real thing?

They're hardly out of kindergarten and haven't lived enough or been steeped enough in sin to make apprentice counter-espionage agents, junior grade.

The natural areas in which one could find them were bodyguard work, asset protection, industrial counter-espionage, and security consultancy.

Argentina was regarded as having fairly efficient counter-espionage capabilities, so the debriefing meetings took place in Rio de Janeiro and GELATO was paid a couple of thousand pounds per meeting into a secret account in Luxembourg.

Its duties are both those of espionage outside France and counter-espionage within, though each service may overlap the other's territory on occasion.

As the request made by our official counter-espionage service to the competent German security organisations has been refused, and these organisations now expect our agents to be on the heels of Argoud and other OAS leaders, the operation must, in so far as it is directed against the person of Argoud, be carried out with maximum speed and discretion.

The DST, whose chief sat three places down from Fernet, was and is the counter-espionage force of France responsible also for maintaining a constant watch on France's airports, docks and borders.