Congressional Republicans are grappling with how to respond to senior Trump administration officials’ use of a Signal group ...

A third top Pentagon official was placed on administrative leave Wednesday in the fallout of a major leak of sensitive U.S.

The information Defense Secretary Pete Hegseth disclosed in the Signal chat of top Trump national security officials was ...

Dan Caldwell, a top adviser to Defense Secretary Pete Hegseth, and Darin Selnick, Hegseth’s deputy chief of staff, have both ...

Mistake.” “Glitch.” “Entirely permissible.” “Hoax.” See the varied and shifting responses President Donald Trump and his ...

Washington — The Signal group chat that conveyed details of the timing and weapons descriptions of a planned attack against the Houthis in Yemen included the names or initials of 18 Trump officials ...

Sources tell CBS News the Signal chat involving senior Trump administration officials included sensitive intelligence Israel ...

U.S. Defense Secretary Pete Hegseth again on Tuesday dodged questions about whether the information he put in a Signal group ...

Defense Secretary Pete Hegseth on Tuesday fended off a reporter’s questions about a leaked Signal chat group about forthcoming strikes on the Houthis in Yemen.

Clinton reacted to the news of the Trump administration's use of Signal, writing on X, "You have got to be kidding me." ...

Signal's encryption protocol is open source, meaning that it's freely available for anyone to inspect, use or modify. The encryption protocol is also used by another popular chat service ...

Striking the Iranian-backed Houthi militia serves U.S. interests and puts pressure on Iran over its nuclear ambitions.