Here's what to know about the messaging app used by Trump Administration officials to discuss military strikes on Yemen.

Government watchdogs say it’s a slippery slope for the mayor to continue using the controversial encrypted messaging app.

Make the most of this encrypted messaging app.

After messages from Mike Waltz's leaked chat on the Signal app went massively public months ago, he was ousted as President Donald Trump's top national security adviser. Now, he's up for a new ...

As national security services warn that Russian hackers are currently engaged in new global attacks against WhatsApp and Signal users, here’s how to stay safe.

Russian hackers allegedly pose as "Signal support" and try to phish victims. The scheme has already compromised the messages of Dutch government employees.

Add Yahoo as a preferred source to see more of our stories on Google. While testifying at a Senate hearing on his nomination for U.S. ambassador to the United Nations on Tuesday, Waltz was asked about ...

Former national security adviser Mike Waltz, testified before the Senate Foreign Relations Committee in his bid to become U.N. ambassador, stood by the use of Signal in a chat that discussed sensitive ...

WASHINGTON, D.C. – The Pentagon's internal watchdog has concluded a monthslong review of Secretary of Defense Pete Hegseth's improper use of the Signal app to discuss sensitive military operations.

When WhatsApp changed its terms in 2021, I was one of the many users who looked for alternative messaging apps for Android. While I had heard about Signal before, the controversial move by WhatsApp ...