Former Acting Assistant Attorney General, Criminal Division, Department of Justice
David A. O'Neil is a litigation partner at Debevoise & Plimpton based in Washington. His practice focuses on enforcement defense, internal investigations, and advising technology companies on interactions with law enforcement and prosecutors. Prior to joining Debevoise, O'Neil served as head of the Criminal Division at the Department of Justice and as a federal prosecutor in the Southern District of New York. In addition to supervising investigations across the full range of federal law, O'Neil brokered a landmark agreement with major technology companies over the ability to disclose government demands for customer information.