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  1. COUNTERINTELLIGENCE Definition & Meaning - Merriam-Webster

    The meaning of COUNTERINTELLIGENCE is organized activity of an intelligence service designed to block an enemy's sources of information, to deceive the enemy, to prevent …

  2. Counterintelligence - Wikipedia

    Counterintelligence, counterterror, and government Many governments organize counterintelligence agencies separately and distinct from their intelligence collection services. …

  3. What Is Counterintelligence? - American Public University

    Jul 29, 2025 · What is counterintelligence? Learn how it combats espionage, protects national interests, and is integrated into intelligence and security degree programs.

  4. counterintelligence - Glossary | CSRC

    The term 'counterintelligence' means information gathered and activities conducted to protect against espionage, other intelligence activities, sabotage, or assassinations conducted by or …

  5. Counterintelligence — FBI

    Counterintelligence Spies might seem like a throwback to earlier days of world wars and cold wars, but they are more common than ever—and they are targeting our nation’s most valuable …

  6. 50 U.S. Code § 3003 - Definitions | U.S. Code | US Law | LII ...

    The term “ counterintelligence ” means information gathered, and activities conducted, to protect against espionage, other intelligence activities, sabotage, or assassinations conducted by or …

  7. COUNTERINTELLIGENCE | English meaning - Cambridge Dictionary

    COUNTERINTELLIGENCE definition: 1. secret action taken by a country to prevent another country from discovering its military…. Learn more.

  8. What is counterintelligence? | Definition from TechTarget

    Oct 31, 2025 · Cyber counterintelligence (CCI) is an emerging field that focuses on the active gathering of information about electronic threat actors, their methods and techniques, and …

  9. COUNTERINTELLIGENCE Definition & Meaning | Dictionary.com

    COUNTERINTELLIGENCE definition: the activity of an intelligence service employed in thwarting the efforts of an enemy's intelligence agents to gather information or commit sabotage. CI See …

  10. counterintelligence noun - Definition, pictures ...

    Definition of counterintelligence noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.