What does COMSEC stand for?

• A. Communications Security
• B. Communications System
• C. Commercial Security
• D. Computer Security

Answer: (A)

COMSEC is about protecting the act of communication itself—preventing eavesdropping, interception, tampering, or spoofing of information as it is transmitted and processed. It encompasses the policies, procedures, and cryptographic measures that secure communications, including key management and secure devices. That focus on safeguarding the transmission and its contents is why Communications Security is the proper expansion. The other options describe the network or system itself or other areas of security, not the protection of communications: Communications System points to the network, Commercial Security isn’t a standard term in this domain, and Computer Security covers IT protection in general rather than the security of communications channels.