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
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DCSA polygraph, a step closer to a more trusted workforce


The room was quiet, all that could be heard was the click of the mouse. I could feel my heartbeat through my arm from the pressure of the cuff that enveloped my arm. “Please sit still and face forward,” the polygrapher said to me. I try to steady my breathing and get focused. “The test will now...

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 survived the horrific terror attack on the Alfred P. Murrah...

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 Director David Cattler approved Personnel Vetting Tiger Team...

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DCSA polygraph, a step closer to a more trusted workforce Story
Oklahoma City Bombing 30th Anniversary – A DCSA Special Agent’s reflection Story
DCSA Personnel Vetting initiative transforms security clearance investigation process, case inventory drops 24% Story
Polygraph training with DCSA

The room was quiet, all that could be heard was the click of the mouse. I could feel my heartbeat through my arm from the pressure of the cuff that enveloped my arm. “Please sit still and face forward,” the polygrapher said to me. I try to steady my breathing and get focused. “The test will now...

  • April 29, 2025
DCSA Deputy Director Daniel Lecce and Central Region leadership meet for the Oklahoma City bombing Memorial service in Oklahoma City, April 19th, 2025. This marked the 30th anniversary of the Oklahoma City bombing of the Alfred P. Murrah building on April 19th, 1995. DCSA Leadership from Headquarters and Central Region attended the ceremony and met with family members of those lost from DSS in the bombing. (DoD Photo by: Philip Steiner)

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 survived the horrific terror attack on the Alfred P. Murrah...

  • April 23, 2025
DCSA LOGO

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 Director David Cattler approved Personnel Vetting Tiger Team...

  • April 22, 2025
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News & Publications

Polygraph training with DCSA

DCSA polygraph, a step closer to a more trusted workforce

The room was quiet, all that could be heard was the click of the mouse. I could feel my heartbeat through my arm from the pressure of the cuff that enveloped my arm. “Please sit still and face forward,” the polygrapher said to me. I try to steady my breathing and get focused. “The test will now...

April 29, 2025

DCSA Deputy Director Daniel Lecce and Central Region leadership meet for the Oklahoma City bombing Memorial service in Oklahoma City, April 19th, 2025. This marked the 30th anniversary of the Oklahoma City bombing of the Alfred P. Murrah building on April 19th, 1995. DCSA Leadership from Headquarters and Central Region attended the ceremony and met with family members of those lost from DSS in the bombing. (DoD Photo by: Philip Steiner)

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 survived the horrific terror attack on the Alfred P. Murrah...

April 23, 2025

DCSA LOGO

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 Director David Cattler approved Personnel Vetting Tiger Team...

April 22, 2025

DCSA LOGO

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 year’s theme is “the Power of Partnership: Trust in People,...

April 7, 2025

DCSA 5th Anniversary Seal

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 the agency’s formation, its transformational journey, an...

March 21, 2025

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