Former national security adviser Mike Waltz was photographed using a Signal-like messaging app during Wednesday’s Cabinet meeting, more than a month after he first came under intense scrutiny for ...

Add Yahoo as a preferred source to see more of our stories on Google. Former national security adviser Mike Waltz, testified before the Senate Foreign Relations Committee in his bid to become U.N.

Signal is back in the headlines, but this time it’s not for a security breach, but rather a high-profile example of how it’s designed to work. Recent news highlighted an incident where classified ...