Michael Gelles is a managing director with Deloitte Consulting, LLP, based in Washington, D.C. He advises a wide variety of clients in law enforcement, intelligence and national security.
Gelles is a known security threat specialist focusing on cyber and physical security risks, asset loss, exploitation, terrorism, workplace violence and sabotage. He works with government and private sector organizations to improve their security posture with a specific emphasis on people, mission and risk. Gelles had led the development or maturity of more than 50 insider threat programs that span data exfiltration to workplace violence. His approach to security is data-driven, focused on risk based decision making and large security transformations based on the client’s strategy, operations, workforce and broader culture focused on mitigating enterprise risk.
Previously, Gelles was an executive in federal law enforcement and the chief psychologist for the Naval Criminal Investigative Service (NCIS) for more than 16 years. In that capacity, he assisted the NCIS and a multitude of other federal, state and local law enforcement agencies with criminal, counterintelligence and counterterrorism investigations and operations.
He is the author of two books, as well as numerous articles, and he is a frequent guest speaker. His books include Threat Assessment: A Risk Management Approach (Taylor Francis) and Insider Threat: Prevention, Detection, Mitigation and Deterrence (Elsevier Press).
