Command and Control.

See: Criminal-2-Criminal (C2C).

Command, Control, Communications and Computers, Intelligence, Surveillance and Reconnaissance.

Combat Air Patrol.

Computer Assisted Passenger Pre-screening System.

See: vehicle-borne improvised explosive device.

Any natural or man-made incident, including terrorism, which results in extraordinary levels of mass casualties, damage, or disruption severely affecting the population, infrastructure, environment, economy, national morale, and/or government functions. (Source: DOD)

Chemical, Biological, Radiological, Nuclear, and High-Yield Explosives.

See: Central Command (CENTCOM).

The U.S. Central Command (CENTCOM).

The Central Industrial Security Force (CISF) is one of the largest paramilitary forces in India and provides security to nuclear power plants, space installations, defense manufacturing, mints, oil fields and refineries, ports, airports and hydro electric/thermal power plants, among others.

The Central Intelligence Agency (CIA) is an independent U.S. Government agency responsible for providing national security intelligence to senior U.S. policymakers. It was created in 1947 with the signing of the National Security Act by President Harry S. Truman.

A certificate is a digital document used as proof of identity and validated by a trusted third party. It usually contains a person or company's public key used for encrypting or signing digital documents.

Counterintelligence.

See: counterintelligence (CI).

See: Central Intelligence Agency.

See: Counterintelligence Field Activity (CIFA).

Communications intelligence.

See: communications intelligence (COMINT).

Technical information and intelligence derived from foreign communications by other than the intended recipients. (Source: DOD)

The U.S. Computer Emergency Readiness Team (US CERT).

Continental U.S. NORAD Region.

Coordinated Universal Time (UTC) is an atomic time standard that replaced Greenwich Mean Time on 1 January, 1972 as the main reference time scale.

That aspect of counterintelligence designed to detect, destroy, neutralize, exploit, or prevent espionage activities through identification, penetration, manipulation, deception, and repression of individuals, groups, or organizations conducting or suspected of conducting espionage activities. (Source: DOD)

Information gathered and activities conducted to protect against espionage, other intelligence activities, sabotage, or assassinations conducted by or on behalf of foreign governments or elements thereof, foreign organizations, or foreign persons, or international terrorist activities. (Source: DOD)

The Counterintelligence Field Activity, also called CIFA, develops and manages Defense Department counterintelligence programs that protect the department by supporting the detection and neutralization of foreign espionage. CIFA contributes to the security of DoD personnel, resources, critical information and infrastructure. (Source: CIFA)

Counterterrorism or counter-terrorism (CT) refers to the methods with which a government detects, prevents, and responds to terrorist activity.

The CSG is chaired by the National Security Council and serves to share information and coordinate the response to terrorist threats against U.S. interests domestically and abroad. (Source: 9/11 Commission Report)

When criminals sell malicious code and sensitive data to other criminals who then put it to use stealing from individuals and corporations.

Counterterrorism Security Group.

See: Counterterrorism Security Group (CSG).

Counter-terrorism.

See: counterterrorism.

Counterterrorist Center.

See: National Cyber Security Awareness Month.