Evaluation of the Secretary of Defense's Reported Use of a Commercially Available Messaging Application for Official Business
This primary source from U.S. Department of Defense Office of Inspector General supports 1 claim across 1 ledger entry.
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While serving in Trump's Cabinet, Pete Hegseth sent sensitive, nonpublic operational information about the March 15 Yemen strikes from his personal phone through Signal; the Defense Department inspector general found that this violated DoD Instruction 8170.01 and created risk to personnel and mission objectives, while recognizing Hegseth's original-classification authority and not making a finding that his transmitted summary remained classified.
Executive summary, pp. i–ii; findings on personal device, Signal, policy compliance, and riskPentagon watchdog found Hegseth used his personal phone and Signal for nonpublic strike details · Final inspector-general report issued December 2, 2025 · reviewed 2026-09-03