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America's Gatekeeper

DCSA is the largest security agency in the federal government dedicated to protecting America's trusted workforce and trusted workspaces.

Each year, DCSA services over

100+ federal entities
10,000+ cleared companies
2M+ background investigations

Learn About Our Mission - Watch The Agency Video

Agency News

View DCSA announces strategy to achieve IT integration, innovation – future-proofing the agency

The Defense Counterintelligence and Security Agency (DCSA) released a 2025-2030 Information Technology (IT) Strategic Plan that guides the delivery of innovative and secure IT solutions to ensure the trustworthiness of the U.S. government workforce and cleared industry.The agency’s first IT...

July 9, 2025

View DCSA Personnel Security mission reorganizes as new Personnel Vetting directorate

QUANTICO, Va. – Defense Counterintelligence and Security Agency Director David M. Cattler approved the reorganization of DCSA’s Personnel Security directorate into the new Personnel Vetting directorate with a focus on effective and efficient delivery of the end-to-end personnel vetting mission for...

June 30, 2025

View DCSA prepares for security training URL migration

LINTHICUM, Md. - By the end of June, the Defense Counterintelligence and Security Agency (DCSA) will transition the Security Training, Education, and Professionalization Portal (STEPP) and the Security Awareness Hub (SAH) platforms to new URLs under DCSA owned domains.URL changes will not impact the...