A hacker breached TeleMessage, a government-approved messaging app used by Trump administration officials, exposing archived ...

President Trump recently discouraged the use of the Signal app after controversy over a group chat of administration ...

Mike Waltz, the national security adviser for President Donald Trump, is seen in photos using Signal during a Cabinet meeting ...

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The clone, TeleMessage, was the subject of a reported hack in which the contents of some direct messages and group chats were ...

Today, the Trump administration announced that national security advisor Mike Waltz would be leaving the White House after ...

The images, captured by Reuters, show Mike Waltz, the former national security adviser, using the TM SGNL app, which allows ...

Mike Waltz was photographed using Signal in a Cabinet meeting the day before Trump announced he was replacing him as national ...

Mike Waltz, President Trump's national security advisor, is leaving the White House weeks after he accidentally added a ...

A clone of the messaging app Signal, which was used by since-ousted national security advisor Mike Waltz, has been hacked.

WASHINGTON — The White House expressed support Monday for Defense Secretary Pete Hegseth following media reports that he shared sensitive military details in another Signal messaging chat ...