From theregister.com
The United States Department of Justice has announced a leak of information pertaining to the design of the nuclear-powered Virginia-class submarine, and the arrest of the alleged leakers.
A court filing and announcement allege that a chap named Jonathan Toebbe, an employee of the Department of the Navy who served as a nuclear engineer, contacted a foreign power and offered to sell “Restricted Data concerning the design of a nuclear-powered warship”.
That foreign power shared the communication with an FBI legal attaché, which found itself looking at a letter sent by Toebbe in April 2020. The letter included some US Navy documents and instructions on how to establish a secure channel between a foreign nation and Toebbe.