Henry Sienkiewicz

Former CIO and Designated Authorizing Authority (DAA), Defense Information Systems Agency (DISA)

Henry J. Sienkiewicz is the former Chief Information Officer (CIO) and Designated Authorizing Authority (DAA) for the Defense Information Systems Agency (DISA), the provider of information technology services for the U.S. Department of Defense (DoD), its mission partners, and the Executive Office of the President (EOP). In that role, he served as the senior decision authority and was personally liable for the cyber security posture of the DoD’s enterprise level networks and computing services, to include the White House Communications Agency (WHCA) and the Situation Room. Henry is also a Fellow at the Department of Homeland Security’s Borders, Trade, and Immigration Institute, which is part of the University of Houston, and an adjutant faculty member at Georgetown University. Prior to joining federal service, Henry served as an executive with multiple technology companies, primarily in the travel industry. In 2013, ComputerWorld named Henry as a Premier100. Henry is a best-selling author in cyber security and philosophy; his works primarily concentrate on the intersection of technology and humanity. His most recent book is “The Art of Cyber Conflict,” an Amazon best-seller, is an unclassified, doctrinal piece that uses Sun Tzu’s “The Art of War” as a baseline to understand cyber.