Cleared professionals often joke about secrecy when there’s a “CI guy” in the room, but what they’re actually referring to is the critical role of security. While both counterintelligence (CI) and security are essential to national defense, they serve distinct purposes and employ different strategies.

Counterintelligence: An Effects-Focused Approach

Counterintelligence is fundamentally about creating effects that deny, degrade, deter, disrupt, and deceive foreign intelligence operations. This proactive stance involves a range of activities designed to counteract the efforts of adversaries:

  • Deny: Preventing adversaries from accessing sensitive information.
  • Degrade: Reducing the effectiveness of adversary intelligence operations.
  • Deter: Discouraging adversaries from attempting intelligence activities.
  • Disrupt: Interrupting adversary intelligence operations.
  • Deceive: Misleading adversaries to protect genuine information.

These activities are dynamic and often offensive, aiming to neutralize threats before they can impact national security.

Security: The Protective Shield

In contrast, security focuses on protection. It encompasses measures designed to safeguard information, personnel, and operations from unauthorized access and harm. Key security measures include:

  • Operational Security (OPSEC): Identifying and protecting critical information to prevent adversaries from gaining an advantage.
  • Security Classification: Categorizing information based on its sensitivity and implementing controls to restrict access.

While these measures are crucial in supporting CI efforts, they are not inherently CI activities. Instead, they form the protective framework within which CI operates.

CI and Security in Warfare

During warfare, the roles of CI and security become even more pronounced. CI drives effects against the adversary, actively working to undermine their intelligence capabilities. This might involve counterespionage operations, cyber counterintelligence, and other tactics aimed at disrupting enemy plans.

Security, on the other hand, ensures the secrecy and protection of friendly forces. This includes maintaining the confidentiality of operational plans, securing communication channels, and protecting personnel from espionage and sabotage.

Know the differences between CI and Security

Understanding the distinct roles of counterintelligence and security is crucial for cleared professionals. While they often work hand-in-hand, their objectives and methods differ significantly. Counterintelligence is about taking the fight to the adversary, creating effects that neutralize threats. Security, meanwhile, provides the essential protective measures that allow CI to operate effectively and ensure the overall safety and integrity of national defense operations.

By recognizing these differences, professionals can better appreciate the unique contributions of each discipline and work more effectively to safeguard national security.

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Shane McNeil has a diverse career in the US Intelligence Community, serving in various roles in the military, as a contractor, and as a government civilian. He is currently the Counterintelligence Policy Advisor for the Chairman of the Joint Chiefs of Staff. His background includes several Army combat deployments and service in the Defense Intelligence Agency (DIA), where he applied his skills in assignments such as Counterintelligence Agent, Analyst, and a senior instructor for the Joint Counterintelligence Training Activity. He is a Pat Roberts Intelligence Scholar and has a Master of Arts in Forensic Psychology from the University of North Dakota. He is currently pursuing a doctorate in Statesmanship and National Security at the Institute of World Politics in Washington DC. All articles written by Mr. McNeil are done in his personal capacity. The opinions expressed in this article are the author’s own and do not reflect the view of the Department of Defense, the Defense Intelligence Agency, or the United States government.