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

The glaring disparity of how leakers are treated comes into view as some of the highest-ranking members of the Trump administration reel from the group text scandal.

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

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 ...

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 ...

The Trump administration fired the general in charge of the National Security Agency and his deputy. This marks the latest dismissal of a top military officer.

The Atlantic’s editor-in-chief was mistakenly added to a Signal group chat with administration officials discussing attack ...

Government systems are not always optimal for the fast-paced environment officials work in, and Signal is an approved ...

The abrupt firing of the general in charge of U.S. Cyber Command and the National Security Agency drew sharp condemnation on ...