Joe Brennan

Joe Brennan

Chief Technology Officer, Cybersecurity

Joe Brennan is the Chief Technology Officer for Cybersecurity at GSIS. He is a Subject Matter Expert in Defensive Cyber Operations and Cyber Education and Training.

Joe Brennan served for 25 years in the United States Navy as a cryptologic warfare officer, retiring as a Commander. His last military job was as Director for Cyberspace operations in Hawaii, where he led 23 offensive and defensive cyber teams ~700 personnel to plan, coordinate and execute offensive cyber operations in support of Joint Force Headquarters and CDR USPACOM. He supported PACOM operational planning and including over 20 cyber security engagements protect and defending US critical governmental systems. He also was the team leader responsible for manning, training and equipping a 64-person cyber team. His efforts include establishment and standardization of new cyber force development methodologies at the individual and cyber team levels which have become the standard across DoD. His key achievements were in developing and promulgating new cyber targeting methodologies, a team-built cyber intelligence preparation of the battlespace publication and defining new reporting and translating processes for the teams.

Joe has also significant experience as a Cyber Manning, Training and Equipment Planner. A Leader responsible for all manpower requirement programs, over 45,000 billets values at $4.6B. As Deputy Branch head at the Pentagon he led a 30-person section to complete over 70 manpower reviews, cost saving analysis and budget submissions. He researched, developed and implemented a knowledge management plan for over 40 personnel to support enhance human resource management. He also developed the Chief of Naval Operations Cyber Manpower Strategy and Implementation plan. This plan entailed the force laydown of over 1860 personnel, defined 52 cyber work roles and established the schedule for assessing, training and manning over 40 cyber teams.

Joe is a graduate of the Naval Post Graduate School in Monterey, California with a Master’s degree in Electrical Engineering, and Bachelor’s degree in Aerospace Engineering.