How classified exhaust tech became the center of a high-stakes espionage case.

Add Yahoo as a preferred source to see more of our stories on Google. Defense Secretary Pete Hegseth pauses during a television interview outside the White House on March 21. (Jacquelyn Martin/AP) ...

Israeli authorities have arrested several people and charged two on suspicion of using classified information to place bets about military operations on the popular prediction market platform ...

Putin detailed exactly how the operation worked.

Navy tugboats guide the USS Essex to its pier at Naval Base San Diego. (File photo courtesy of the U.S. Navy) A San Diego-based U.S. Navy sailor accused of selling military secrets to a Chinese ...

A former U.S. Army intelligence analyst was sentenced Wednesday to 7 years in prison for selling military secrets to a contact in China, the U.S. Department of Justice said. Korbein Schultz, 25, of ...

A former member of the US Army's elite Delta Force squad has been arrested for leaking classified secrets to a reporter as prosecutors revealed her private messages. Courtney Williams, 40, was ...

A U.S. Navy sailor was convicted in federal court after selling military secrets to China, the Department of Justice (DOJ) announced on Wednesday. Jinchao Wei, a 25-year-old Navy sailor previously ...