avatar for Greg Sisson

Greg Sisson

U.S. Department of Energy
Chief Information Security Officer
Mr. Sisson is currently serving as the United States Department of Energy’s Chief Information
Security Officer (CISO).

Prior to joining DOE in 2018, he served as the Chief of Staff and the Deputy Director of
Operations at Joint Force Headquarters Department of Defense Information Network (JFHQ-
DODIN). JFHQ-DODIN is a component of United States Cyber Command and oversees DOD
information network operations and defensive cyberspace operations globally.

Before JFHQ-DODIN, he served in a number of roles at United States Joint Forces Command
and the Joint Staff, training military organizations as they prepared for combat operations and was
awarded the Civilian Global War on Terrorism Medal for his work. His last job was as a Cyberspace
and Information Technology Training Capabilities Advisor for the Joint Staff J7 where he was
instrumental in engaging stakeholders across the DOD and the interagency community to coordinate
actions integral to the development, delivery, and implementation of the DOD’s Cyber Strategy.

Prior to serving as a DoD Civilian, Mr. Sisson served over 20 years as a non-commissioned and
commissioned officer in the United States Army where he led diverse organizations at multiple echelons.
He retired as a Signal Officer in 2004.

Mr. Sisson completed his undergraduate work at the University of South Carolina Aiken where
he earned a Bachelor of Arts in History and, in 2014 he earned a Master of Arts in National Security
and Strategic Studies from the College of Naval Warfare in Newport, RI.
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