counterespionage

They don't bother much with counterespionage, here, but they don't fool when it comes to countersabotage.

All thought of functioning in counterespionage against the Russians had moved into the back of his mind.

Allow me to introduce one of America's most effective counterespionage agents, Mr. Samson Narko!

One of the counterespionage sections was specialized and had only a responsibility for eliminating underground organizations.

Your Society is the most efficient espionage and counterespionage group in history, as far as I know.