Sources familiar with an internal probe said a chain of errors led to the accidental leak of a military operation.

The Trump administration's IT team members investigated how Atlantic editor-in-chief Jeff Goldberg was added to a Signal ...

Trump's national security advisor Mike Waltz mistakenly saved the number of The Atlantic Magazine editor Jeffrey Goldberg ...

A hard-won Senate confirmation was not enough to keep the aroma of scandal away from Secretary of Defense Pete Hegseth for long.

The White House’s assertion that the case is closed surrounding national security officials’ use of Signal is getting ...

On January 21, 2017, President Donald Trump’s then–press secretary, Sean Spicer, claimed that Trump had drawn the largest ...

You think the Signalgate debacle is a national security disaster? You may not realize the half of it. This Pentagon blunder (don’t call it a mistake) lays bare the security risks posed by President ...

President Donald Trump has abruptly fired the director of the National Security Agency, according to U.S. officials and ...

Gen. Timothy Haugh had just last week testified​ on Capitol Hill about the Signal leak in which a journalist had been added ...

Gen. Timothy Haugh’s firing as head of the NSA and U.S. Cyber Command has left lawmakers worried about the future of the nation’s cyber defenses.

President Trump on Thursday confirmed a reported purge of national security agencies this week, with firings of at least a ...