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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 More About Our Mission

Agency News

View Additional resources now available for NITAM

Since 2019, National Insider Threat Awareness Month (NITAM) has been held annually in September, a month-long event that brings together security professionals and policy experts from both government and private industry with the stated goal of educating organizations about the risks posed by...

Sept. 19, 2024

View DCSA joins delegation to Australia and strengthens ties with counterparts

In June 2024, DCSA representatives from Industrial Security (IS) and Counterintelligence (CI) traveled to Canberra, Australia, to meet face-to-face with their counterparts.

The Fourth of July, marked by parades and patriotic gatherings, is the anniversary of the Declaration of Independence. However, it’s also the anniversary of another event with major global impact. On July 41918, U.S. and Australian troops fought side by side for the first time at the Battle of Hamel...

Sept. 16, 2024

View Make a difference; be a part of the 2025 DCSA Student Experience

Director's Round Table with DCSA Student Experience Interns at the Russell Knox Building, Quantico Va. (DOD photo by Gracyn Redding)

The 10-week Defense Counterintelligence and Security Agency (DCSA) Student Experience (DSE) is available to undergraduate or graduate students from an accredited college or university. This year, interns reached 13 different mission areas, including the core mission directorates of...