Former national security adviser Mike Waltz was photographed using the Signal app during a Cabinet meeting on Wednesday, a ...

More than a month after he drew criticism for using Signal to discuss an impending military attack, Waltz was seen using what ...

Mike Waltz gave up one of the safer seats in Congress to serve as President Donald Trump’s national security adviser (Trump ...

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

These first three months of Trump's term have been defined by his sweeping changes to the federal government, his immigration ...

Secretary of Defense Pete Hegseth has faced allegations of sharing classified information on Signal, a commercially available ...

Waltz inadvertently added The Atlantic's editor-in-chief to a group thread discussing sensitive national security matters.

House Republicans blocked a resolution that could have forced an investigation into Defense Secretary Pete Hegseth. Rep. Adam ...

VP Vance says Waltz's ouster was not due to Signal scandals Kaitlan Collins asks Schumer if his 17 percent approval rating ...

The U.S. defense secretary has another Signal group chat. This one reportedly includes his wife and her former Fox News ...

Signal uses end-to-end encryption to keep texts secure, preventing third parties — including foreign governments — from ...