DoD Chief Information Officer John Sherman testifies before the Senate Armed Services Committee, subcommitee on cyber security, in Washington, D.C. March 29, 2023. (DoD photo by EJ Hersom) Zero trust would have ‘likely’ caught and prevented classified leak, Pentagon CIO believes Under Sherman's direction, the DOD is working to deploy a zero-trust architecture by 2027. May 3, 2023 By Billy Mitchell