Ennis is a CISSM Senior Fellow and the Executive Director of the University of Maryland Cyber Initiative. He is also CEO of DRE Consulting. In these roles, he leverages over 36 years of U.S. Government service, principally with the National Security Agency/Central Security Service (NSA/CSS).
Prior to his retirement from NSA, Ennis was the director of the Threat Operations Center (NTOC). NTOC is responsible for conducting 24/7 cryptologic activities to discover, characterize, and proactively counter cyber threats to U.S. national security systems and other networks of interest, while protecting the legal rights of U.S. persons.
Ennis’ distinguished career with the U.S. Government began in 1979 with the Drug Enforcement Administration (DEA). He joined NSA in 1982 and has held numerous senior-level positions, primarily within the Signals Intelligence Directorate. Prior to becoming the NTOC Director, Ennis served as the Assistant Deputy Director of Analysis and Production, providing overall management of the U.S. Signals Intelligence analysis and production mission. Other senior positions held included Chief, NSA Tailored Access Operations, Chief, Transnational Targets (counter terrorism, counter proliferation, counter intelligence, narcotics and serious crimes, and weapons and space) and Chief, Office of Russia.