Kenneth Dieffenbach, CFE
Deputy Assistant Inspector General for Investigations, US Department of Energy
Ken Dieffenbach serves as the Deputy Assistant Inspector General for Investigations at the U.S. Department of Energy OIG. He began his federal law enforcement career in 1996 with the Air Force Office of Special Investigations. From 2003 to 2021, he served in various roles at the U.S. Department of Justice Office of the Inspector General. Ken enjoys long walks and talking about grant fraud with anyone who will listen