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  1. Counterintelligence - Wikipedia

    It includes gathering information and conducting activities to prevent espionage, sabotage, assassinations or other intelligence activities conducted by, for, or on behalf of foreign powers, …

  2. Counterintelligence and Espionage — FBI

    4 days ago · In collaboration with the National Counterintelligence and Security Center, the FBI released a short film to educate anyone with a trade secret about how they can protect it.

  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 at CIA: A Brief History - The World Factbook

    Mar 23, 2018 · During those years, Angleton accrued a substantial amount of resources and influence for counterintelligence inside CIA, built good working-level relations with the FBI, and cultivated …

  5. What Is Counterintelligence and Why Does It Matter?

    Aug 9, 2025 · Counterintelligence involves information gathering and activities conducted to protect against espionage, sabotage, and other intelligence operations carried out by foreign powers, …

  6. Counterintelligence | government operation | Britannica

    counterintelligence, in government operations, the information and activity related to protecting a nation’s own information and the secrecy of its intelligence operations.

  7. Counterintelligence - Intelligence Studies - LibGuides at Naval War …

    Aug 18, 2025 · This research guide contains information-- both current and historical--on the topic of intelligence. Areas covered include intelligence collection, the intelligence cycle, and also topics such …

  8. Counterintelligence & Insider Threat

    Counterintelligence (CI) conducts activities to identify, assess, and neutralize foreign intelligence and cyber threats to DCSA, the Trusted Workforce, the cleared National Industrial Base, and its …

  9. WASHINGTON, DC -- The National Counterintelligence and Security Center (NCSC) today unveiled the new National Counterintelligence Strategy, which can be accessed at

  10. What is counterintelligence? | Definition from TechTarget

    Oct 31, 2025 · Counterintelligence (CI) is the information gathered and actions taken to identify and protect against an adversary's knowledge collection activities or attempts to cause harm through …