Learn how DCSA is safeguarding tomorrow, today. Watch the new agency video.

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

Agency News

View Inside DCSA BI: CSE Liaison Team: Enhancing collaboration for facility clearances

Throughout the Defense Counterintelligence and Security Agency (DCSA), industry engagement is a vital component of the agency’s mission. With approximately 12,500 contractor facilities, ranging from small “mom and pop shops” to large multinational corporations, that are permitted access to...

Nov. 8, 2024

View NBIS modernization reaches acquisition milestone

On October 18, 2024, Dr. William LaPlante, Under Secretary of Defense for Acquisition and Sustainment (USD(A&S)) and Decision Authority for the National Background Investigation Services (NBIS) program signed an acquisition decision memorandum, which documents the way forward for the NBIS program...

Nov. 8, 2024

View Introducing DCSA's first agency video

The Defense Counterintelligence and Security Agency has released its first agency video, outlining our mission, vision and values. DCSA is at the forefront of safeguarding trust in our federal workforce, in our workspaces and our classified IT systems and data. While our efforts may not always be...