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

Oklahoma City Bombing 30th Anniversary – A DCSA Special Agent’s reflection

OKLAHOMA CITY – Retired Defense Counterintelligence and Security Agency (DCSA) Special Agent Susan Murphy attended the memorial service on the 30th anniversary of the Oklahoma City bombing in remembrance of the 168 lives lost and those who...

4/23/2025

DCSA Personnel Vetting initiative transforms security clearance investigation process, case inventory drops 24%

The Defense Counterintelligence and Security Agency (DCSA) is implementing a sweeping range of solutions to improve the speed and efficiency of its Personnel Vetting processes while reducing inventory and improving timeliness.     DCSA...

4/22/2025

DCSA hosts annual Virtual Security Conference for Industry

QUANTICO, Va. – The Defense Counterintelligence and Security Agency (DCSA) Security Training (ST) is announcing the Virtual Security Conference for Industry on April 23-24, 2025. Registration for this online conference is live now. This...

4/7/2025

DCSA at Five Years: A Journey to Trust Through Transformation

The Defense Counterintelligence and Security Agency (DCSA) has released a five-year retrospective report, "Journey to Trust Through Transformation." The report provides a retrospective of the agency’s first five years, including a look at...

3/21/2025

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