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 More About Our Mission

News & Publications

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...

6/30/2025

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...

6/23/2025

CDSE: Developing tomorrow's security leaders through advanced education

LINTHICUM, Md. – The Education Division, within the Center for Development of Security Excellence (CDSE), builds future security leaders as the premier provider of online higher education for the Department of Defense (DOD) and the U.S...

6/20/2025

DCSA Personnel Security Specialist honored with DoD award

Each spring, during Public Service Recognition Week, the Pentagon pauses to spotlight a few extraordinary individuals whose quiet, steady dedication often goes unseen. This year, among those recognized is Dianna Wilson, a Personnel Security...

6/16/2025

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