Counterintelligence (counter-intelligence) or counterespionage (counter-espionage) is any activity aimed at protecting an agency's intelligence program from an opposition's intelligence service. [1]

Apr 23, 2025 · Because much of today's spying is accomplished by data theft from computer networks, espionage is quickly becoming cyber-based. The goals of the FBI's counterintelligence work are to: Do You Want...

We provide authorized counterintelligence support to identify, assess, and disrupt foreign intelligence entity threats to the trusted workforce and the cleared national industrial base.

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 agencies to adopt new methods to meet new and emerging trends and threats.

The Counterintelligence Division (CD) is a division of the National Security Branch of the Federal Bureau of Investigation. The division protects the United States against foreign intelligence operations and espionage.

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 political and military information.

What is Intelligence? Below are links to the press release and the National Counterintelligence Strategy.

CI officers detect, identify, assess, exploit, counter and neutralize damaging efforts by foreign entities. In an ever-changing, dynamic global threat environment, CI officers develop and execute strategies that defeat our adversaries’ attempts to harm us.

As an activity, counterintelligence consists of two matching halves, security and counterespionage. Security consists basically of establishing passive or static defenses against all hostile and concealed acts, regardless of who carries them out.

Counterintelligence, in government operations, the information and activity related to protecting a nation’s own information and the secrecy of its intelligence operations. It is a police and security function that is concerned primarily with defensive, protective activities.