What is COMSEC?

COMSEC, short for Communications Security, refers to the measures and controls taken to deny unauthorized individuals information derived from telecommunications and to ensure the authenticity of such communications. It involves the application of security principles to telecommunications and information systems to protect confidentiality, integrity, and availability. Common COMSEC practices include encryption, key management, transmission security, and physical security of communication equipment. It is commonly used by governments, militaries, and other organizations that require secure communications.