counterintelligence
noun
coun·ter·in·tel·li·gence
ˌkau̇n-tər-in-ˈte-lə-jən(t)s 
: organized activity of an intelligence service designed to block an enemy's sources of information, to deceive the enemy, to prevent sabotage, and to gather political and military information
Examples of counterintelligence in a Sentence
Recent Examples on the Web
By law, grand jury testimony is kept secret, except in matters of national security or counterintelligence, neither of which applies in this case.
—
Meredith Kile, People.com, 22 July 2025
LaCroix has taught a variety of subjects including cybercrime, counterterrorism, critical infrastructure protection, intelligence, counterintelligence and Homeland Security legal and policy Issues.
—Hunter Lacroix, Baltimore Sun, 13 July 2025
In 2020, the FBI reported that about half of its nearly 5,000 active counterintelligence cases were related to China.
—David Faris, MSNBC Newsweek, 11 Apr. 2025
The Shin Bet, Israel’s internal security and counterintelligence service, has increased its surveillance of neighborhoods with high proportions of Arabs and has arrested hundreds.
—Daniel Byman, Foreign Affairs, 28 July 2025
See All Example Sentences for counterintelligence
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Meredith Kile, People.com, 22 July 2025
LaCroix has taught a variety of subjects including cybercrime, counterterrorism, critical infrastructure protection, intelligence, counterintelligence and Homeland Security legal and policy Issues.
—Hunter Lacroix, Baltimore Sun, 13 July 2025
In 2020, the FBI reported that about half of its nearly 5,000 active counterintelligence cases were related to China.
—David Faris, MSNBC Newsweek, 11 Apr. 2025
The Shin Bet, Israel’s internal security and counterintelligence service, has increased its surveillance of neighborhoods with high proportions of Arabs and has arrested hundreds.
—Daniel Byman, Foreign Affairs, 28 July 2025
See All Example Sentences for counterintelligence
Cite this Entry
“Counterintelligence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counterintelligence. Accessed 20 Aug. 2025.
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counterintelligence
noun
coun·ter·in·tel·li·gence
ˌkau̇nt-ə-rin-ˈtel-ə-jən(t)s
: activities of an intelligence service meant to hide the truth from an enemy or to prevent the enemy from learning secret information
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