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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

    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? Key Concepts Explained

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

  4. What Is Counterintelligence and Why Does It Matter?

    Jan 28, 2026 · Counterintelligence involves gathering information and conducting activities to protect the nation against spying, sabotage, and other secret intelligence operations.

  5. 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 …

  6. 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 …

  7. COUNTERINTELLIGENCE IN THE 21ST CENTURY: THE NEED FOR …

    Mar 17, 2021 · Counterintelligence (CI) is a dynamic and ever-changing field, art, and science. In recent times, significant societal and technological changes have forced the CI field and its component …

  8. 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 …

  9. 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 …

  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.