DCSA

The Defense Counterintelligence and Security Agency (DCSA) is the DoD agency responsible for personnel security investigations (background checks for security clearances), industrial security oversight (ensuring contractor facilities protect classified information), and counterintelligence support. DCSA administers the National Industrial Security Program (NISPOM).

For organizations with a facility clearance, DCSA conducts security inspections, processes clearance investigations, and validates requirements for handling classified information.