Final answer:
Communications Security (COMSEC) is about protecting communication systems and information. The CMS Custodian is responsible for managing and maintaining the security of these systems.
Step-by-step explanation:
Communications Security (COMSEC) refers to the measures and techniques used to protect the confidentiality, integrity, and availability of communication systems and information. This includes ensuring that unauthorized individuals cannot intercept or access sensitive communications.
The CMS Custodian or Communications Security (COMSEC) Custodian is responsible for managing and maintaining the security of communication systems and equipment. They handle tasks such as controlling access to encryption keys, managing cryptographic devices, conducting audits, and ensuring adherence to COMSEC policies and procedures.
Overall, the role of the CMS Custodian is crucial in safeguarding sensitive information and ensuring secure communication within an organization or government agency.