The claim spread after The Atlantic reported that Trump officials accidentally added the publication's editor-in-chief to a ...

Current and former US officials have told CNN they believe two texts sent by national security adviser Mike Waltz and CIA ...

In some cases, federal agencies have permitted the use of Signal, the encrypted messaging app used by top Trump officials to ...

A popular messaging app called Signal was recently the preferred communications platform for top officials in the Trump ...

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

A group chat — called “Strike Force” — was created in the encrypted messaging app for the mayor and 14 of his advisers on Jan. 15, in the days before President Donald Trump ...

The Pentagon's inspector general launched a probe into the Trump administration's use of Signal to discuss a planned strike ...

Democratic Sen. Mark Warner said had information been leaked from national security officials' Signal chat on plans to bomb the Houthis, lives could have been lost.

Former members of the defense and intelligence communities wonder who’s in charge of policy and operations — and if they’re ...

The Pentagon’s acting inspector general will review Defense Secretary Pete Hegseth’s use of the Signal app to coordinate ...

The Pentagon’s acting inspector general has announced that he will review Defense Secretary Pete Hegseth’s use of the Signal ...

The Signal chat about U.S. plans for a strike against Houthi militants reveals how the Trump administration is conducting policy and presents a test for how officials handle the fallout.