A dozen current and former officials confirmed that the encrypted messaging app is used across various agencies — despite warnings about its security vulnerabilities.

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 ...

The probe, announced via podcast, has been widely criticized.

Some strategies on how to best use Signal to keep your messaging secure. Some strategies on how to best use Signal to keep your messaging secure. is a senior science reporter covering energy and the ...

Republican prosecutor Brad Miller denied that he has Signal on his phone, but Phoenix New Times has seen the messages.

US Defense Secretary Pete Hegseth risked endangering troops by using the Signal messaging app to discuss a strike on Houthis in Yemen, sources say a Pentagon watchdog report finds.Key points Hegseth's ...

WASHINGTON (AP) — Defense Secretary Pete Hegseth had an internet connection that bypassed the Pentagon’s security protocols set up in his office to use the Signal messaging app on a personal computer, ...

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.

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 ...

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 ...