Message contents and government official contact information were obtained during the breach, 404 Media reports.

A hacker reportedly stole customer data from a company that makes a Signal-like app that former National Security Adviser ...

Senate Democrats predict that former National Security Adviser Mike Waltz will have a "brutal confirmation hearing" for his ...

"I think it will be a brutal confirmation hearing," Sen. Mark Warner said of Mike Waltz. "I think he's going to have tough ...

The fired national security adviser engaged in intense coordination with Israeli Prime Minister Benjamin Netanyahu about ...

There are some hurdles former National Security Advisor Mike Waltz must clear first before the United Nations ambassador job ...

Sen. Mark Warner (D-Va.) predicts that former national security adviser Mike Waltz will face a “brutal” confirmation hearing ...

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

President Donald Trump’s removal of national security adviser Mike Waltz brings further disruption to his national security ...

Waltz was at the center of the Signal chat controversy, in which a journalist was accidentally included in a discussion of ...

President Trump announced Thursday that he plans to nominate Waltz, who has been the national security adviser, to be U.N.

Trump said he's nominating Michael Waltz to be ambassador to the United Nations, while Secretary of State Marco Rubio will ...