A third top Pentagon official was placed on administrative leave Wednesday in the fallout of a major leak of sensitive U.S.

WhatsApp uses Signal's encryption protocol, so your chats and calls are just as end-to-end encrypted as those on Signal. But ...

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

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

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

WASHINGTON >> The team led by President Donald Trump’s national security adviser, Mike Waltz, set up at least 20 group chats ...

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

Top Trump administration national security officials’ use of the messaging app Signal is raising new questions ... the materials to determine any legal issues at this point.

The Trump cabinet’s shocking leak of its plans to bomb Yemen raises myriad confidentiality and legal issues. The security of ...

Secure messaging app Signal has been in the spotlight this week for national-security reasons, but companies can also learn lessons from the Trump administration’s misstep.

The national security adviser's use of the messaging app is under scrutiny after he mistakenly added a journalist to a sensitive chat.

The White House is clapping back against media reports claiming intel officials have been using the end-to-end encrypted messaging app Signal to send classified information.