The messaging app Signal is making headlines again, with the news that U.S. Defense Secretary Pete Hegseth used it for a chat with his wife, his personal lawyer and others in which he shared sensitive ...

Former national security adviser Mike Waltz was photographed using a Signal-like messaging app during Wednesday’s Cabinet meeting, more than a month after he first came under intense scrutiny for ...

Mike Waltz, the departing national security adviser at the center of "Signalgate," is seen in new photos using the commercial messaging application during a Cabinet meeting held by President Donald ...

The nation’s top intelligence officials have told lawmakers that it was routine for them to discuss sensitive national security issues on the encrypted messaging app Signal. It’s widely used at their ...

The "signal sniffer" being used in the Nancy Guthrie investigation was mounted on a helicopter on Monday.

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...

A photo taken by Reuters' Evelyn Hockstein during a Cabinet meeting Wednesday shows Waltz holding his phone below the table, with the encrypted-texting app open and visible. It also shows Waltz in ...

President Donald Trump's former national security adviser Mike Waltz was photographed using Signal during a Cabinet meeting on Wednesday, just one day before the president announced he was replacing ...

On ThursdaY, Reuters published a photo depicting then-United States national security adviser Mike Waltz checking his phone during a cabinet meeting held by President Trump in the White House. If you ...

Former White House national security adviser Mike Waltz was seen using the encrypted messaging app Signal in photos taken during Wednesday's Cabinet meeting. Waltz was removed as national security ...

Defense Secretary Pete Hegseth violated Pentagon policy that prohibits use of a personal device for official business when he used a Signal chat to discuss military strike plans and failed to properly ...