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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

    Listen to this episode of Inside the FBI to learn about counterintelligence, what it means to the FBI, and the types of hostile foreign intelligence activity we work to combat.

  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

    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? Federal Laws and Penalties

    Apr 1, 2026 · Counterintelligence is the practice of identifying and neutralizing efforts by foreign governments, organizations, and individuals to spy on, sabotage, or covertly influence the United …

  6. 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 …

  7. 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 sabotage, and to gather …

  8. Counterintelligence Investigations - United States Department of State

    The Diplomatic Security Service (DSS) runs a robust counterintelligence program designed to deter, detect, and neutralize the efforts of foreign intelligence services targeting State Department …

  9. Counterintelligence: Information gathered and activities conducted to identify, deceive, exploit, disrupt, or protect against espionage, other intelligence activities, sabotage, or assassinations conducted for …

  10. Counterintelligence Strategies: Safeguarding National Security …

    Counterintelligence plays a critical role in national security and the protection of sensitive information. It focuses on preventing espionage and thwarting the activities of foreign intelligence services.