The U.S. Attorney’s office in Boston received Air National Guardsman Jack Teixeira’s guilty plea in a case involving a leak of classified military information last year.

OpenAI named five hacker groups affiliated with governments in China, Russia, North Korea and Iran who used their artificial intelligence tools for training and research purposes.

Victor Manuel Rocha, 73, is pleading not guilty to federal charges relating to allegations of secretly serving as an agent of Cuba’s government.

Defense Secretary Lloyd Austin’s quiet hospitalization that left the White House and public in the dark is unprecedented, says national security expert Robert Greenway.