The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the ...

Another sticky spot is that government regulations require a record of communication. Signal—and other secure messaging ...

In some cases, federal agencies have permitted the use of Signal, the encrypted messaging app used by top Trump officials to ...

US president defends key security official after journalist says he was added to group chat about air strikes.

The Pentagon has issued a stark warning against the use of the encrypted messaging app Signal, raising concerns over cybersecurity lapses at the highest levels of government. This advisory comes in ...

Senior Trump administration officials used Signal, an encrypted messaging app, for military discussions and accidentally included a journalist, exposing sensitive information. This incident has ...

Last week’s revelation that Trump administration officials used the commercial messaging app Signal to discuss top secret ...

The nation’s top intelligence officials have told lawmakers that it was routine for them to discuss sensitive national security issues on the encrypted messaging app Signal. It’s widely used ...

A German news website said it was "particularly easy" to obtain Pentagon chief Pete Hegseth's private contact information.

As with any security-focused app, the security is only as robust as the person using it. Signal is designed to encrypt your ...

Four sources tell Politico they were aware of at least 20 chat groups, all four confirmed sensitive information was discussed ...

WASHINGTON, April 2 (Reuters) - The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the commercial Signal app to coordinate ...