Joseph Tonon, a former Amazon Web Services executive, has been named director of the Defense Counterintelligence and Security Agency.
Under Secretary of War for Intelligence and Security Bradley Hansell announced Tonon’s selection as head of DCSA on Wednesday.
As DCSA prepares for a leadership transition, federal officials and industry leaders continue to focus on intelligence modernization, secure information-sharing, AI, cyber capabilities and other technologies shaping national security operations — topics that will be explored at the 2026 Intel Summit. Sign up now for the Sept. 24 event to hear experts discuss evolving mission demands and emerging technologies shaping the future of intelligence operations.
Tonon will take over responsibilities from Justin Overbaugh, who has been serving as acting director following David Cattler’s retirement.
Table of Contents
What Are Tonon’s Responsibilities as Head of DCSA?
As director, Tonon will oversee DCSA efforts to identify and assess security risks to support national security decision-making.
His responsibilities include overseeing personnel vetting and industrial security operations for government organizations and contractors participating in the National Industrial Security Program. He will also supervise security training and counterintelligence support activities.
Tonon will direct the continued development and deployment of the National Background Investigation Services platform, which supports the federal government’s Trusted Workforce 2.0 personnel vetting modernization initiative.
Who Is Joseph Tonon?
Tonon most recently worked at Amazon Web Services as part of the company’s global defense team.
His previous government assignments include serving as acting assistant secretary of defense for special operations and low-intensity conflict, and as a special assistant to the deputy secretary of defense.
He also served on the secretary of Navy’s staff, where he led technology and data loss prevention efforts. He spent nearly two years at Oracle as director and industry lead for defense and intelligence, according to his LinkedIn profile.
The University of Rochester graduate holds a doctorate from Washington University in St. Louis.
What Is DCSA?
DCSA is the federal government’s largest security agency responsible for personnel vetting, industrial security and counterintelligence support activities. It administers the National Industrial Security Program on behalf of DOW.
DCSA has continued advancing modernization efforts tied to security and information systems. In August, the agency announced plans to migrate its Defense Information System for Security to the cloud as part of its 2025-2030 IT Strategic Plan.
The agency remains responsible for overseeing security compliance across cleared contractor facilities. A recent Government Accountability Office report said DCSA conducted more than 4,600 security reviews in fiscal year 2025 and documented more than 800 security violations tied to cleared contractor facilities. The report also identified challenges related to workforce capacity and risk management oversight.
Related Articles
National Reconnaissance Office Director Chris Scolese, a five-time Wash100 awardee, said artificial intelligence is transforming how NRO delivers space-based intelligence capabilities that support national security missions. As NRO and other agencies within the intelligence community accelerate the adoption of AI, automation and advanced space capabilities, government and industry leaders continue to shape the future of national security operations. Attend the Potomac Officers Club’s 2026 Intel Summit on Sept. 24 to hear more about AI, data, secure information sharing and other modernization priorities within IC. Save your spot now! “Simply put, we must continue to leverage AI – and every emerging
The Food and Drug Administration has launched Elsa 4.0, the latest version of its internal artificial intelligence platform, and consolidated more than 40 agency application and submission systems into a new data platform called HALO. The agency said Wednesday the modernization effort is intended to expand AI integration across FDA operations and improve how staff access and analyze regulatory data. “Integrating AI into our workflows is an urgent priority that will allow us to rapidly advance regulatory science and deliver more cures and meaningful treatments to patients faster,” said Jeremy Walsh, FDA chief AI officer. Find out how the major
The U.S. Coast Guard is consolidating its deployable specialized forces under a new Special Missions Command headquartered in Kearneysville, West Virginia, the service said Wednesday. As the Coast Guard advances modernization efforts with its new Special Missions Command, the Potomac Officers Club’s 2026 Homeland Security Summit on Nov. 12 will bring together DHS and industry leaders to discuss evolving security priorities, operational capabilities and emerging technologies. Register now. What Is the Purpose of the Special Missions Command? The Special Missions Command is intended to enhance the Coast Guard’s readiness, coordination, response capabilities, mission effectiveness and interoperability across service, departmental and joint