Men and women who have taken to the air on behalf of the United States expressed bewilderment after the leak of attack plans.

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

The White House continued to downplay the seriousness of the incident, parsing semantics and attacking the journalist who was ...

Executing an overarching strategy to diminish the threat of terrorism, curtail Iranian influence and avoid letting China ...

Did Defense Secretary Pete Hegseth’s messages detailing planned U.S. airstrikes in Yemen constitute a classified war plan?

Defense Secretary Pete Hegseth on Tuesday fended off a reporter’s questions about a leaked Signal chat group about ...

A Pentagon-wide advisory that went out one week ago warned against using Signal, the messaging app, even for unclassified ...

Imagine you pick up your phone one day and discover you have been included in a group chat that features text messages ...

On Monday it was revealed that top Trump administration officials were using a commercial messaging app to plan military ...

Because Signal uses end-to-end encryption, experts agree it is more secure than conventional texting - but it could be hacked ...

Lawmakers and legal experts claim the Yemen Signal group chat ‘blatantly violated security regulations designed to prevent ...