What does COMSEC stand for?

COMSEC stands for Communication Security. This term encompasses measures and controls designed to protect classified and sensitive information that is transmitted via communication systems. The goal of COMSEC is to prevent unauthorized access and ensure the integrity and availability of the information being communicated. It includes various practices such as the use of encryption, secure communication protocols, and authentication methods to safeguard the data.

The other options present concepts that are not recognized definitions of COMSEC. For instance, Controlled Emissions Security and Combined Military Secured Communications do not encapsulate the widely accepted principles and practices of communication security. Comprehensive Emergency Security suggests a focus on emergency management rather than the specific protection of communication systems. Thus, Communication Security is the most accurate and widely accepted definition of COMSEC within the context of secure communications.