A breach of sensitive U.S. military information via the Signal app has raised concerns over national security. Defense ...

Technology Technology   The Big Story Congress pushes back as Trump snubs Signal chat The White House’s assertion that the ...

By one account, some former officials say they haven’t seen such turmoil in the U.S. intelligence community in decades, "if ever.” ...

National Intelligence Director Tulsi Gabbard and CIA Director John Ratcliffe both downplayed the mishap at a contentious Senate Intelligence Committee hearing a day after The Atlantic’s Jeffrey ...

The White House’s assertion that the case is closed surrounding national security officials’ use of Signal is getting pushback in Congress, even among some Republicans who say their own probes ...