Signal protects conversations, but it was never designed to safeguard U.S. war plans — and using it that way carried real ...

A few weeks ago we witnessed an incident where military leaders inadvertently included a reporter in what was supposed to be a closed, secure communication channel, all due to the use of the Signal ...

CIA Director John Ratcliffe maintained in a heated exchange before a Senate panel that his participation in a Signal group chat, which discussed attacking the Houthis, was above the books and ...

When top White House defense and national security leaders discussed plans for an attack on targets in Yemen over the messaging app Signal, it raised many questions about operational security and ...