Definition of "counterintelligence" [counterintelligence]

• The branch of an intelligence service charged with keeping sensitive information from an enemy, deceiving that enemy, preventing subversion and sabotage, and collecting political and military information. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "He claimed that he himself was a member of the CIA (a charge he later recanted) and said he had been recruited “between 1970 and 1971” and trained in counterintelligence in Panama and Venezuela."
• "The website, MyanmarNargis. org, has a few telltale signs of being a false front operation -- what is euphemistically known in the field as "counterintelligence" -- headed up in fact by the SPDC."
• "From 1948 to 1972, Mr. Gorham worked in Japanese counterintelligence in the Navy Department's Office of Naval Intelligence."