Cyber Security Technicians are responsible for all aspects of ensuring Marine Corps information systems data availability, integrity authentication, confidentiality, and non-repudiation. Computer network defense specialist implement and monitor security measures for USMC communication information systems networks, and advise the commander that systems and personnel adhere to established security standards and governmental requirements for security on these systems. Duties include assisting in the development and execution of security policies, plans, and procedures; design and implementation of data network security measures; network intrusion detections and forensics; information system security incident handling; and certification of Marine Corps systems and networks.

Technical controller Marines operate technical control equipment to locate faults or degradation in communication networks. They are in key positions to test transmission quality since most high-capacity communications circuits pass through tech control equipment. Typical duties include testing of circuits to ensure circuit quality is maintained, repair faults or degradation in communications networks, and maintain records on activation/deactivation of communications links. Technical controller Marines operate and maintain tech control equipment by performing tasks including equipment adjustments and replacing faulty components/parts.

Marines holding MOS 0614 operate and perform organizational maintenance on the Central Office AN/TTC-42. This switch is a computer-controlled node for multiple voice and digital data trunks/lines. Typical duties include installing and interconnecting equipment, performing limited technical control of the voice/data network, and updating the database or crypto keys to ensure reliable, secure telephone service for the user.