Add Yahoo as a preferred source to see more of our stories on Google. Signal, the most secure widely available messaging app, has become a go-to resource for journalists, leakers and other people ...

So, about that Signal chat. On Monday, shortly after we published a story about a massive Trump-administration security breach, a reporter asked the secretary of defense, Pete Hegseth, why he had ...

War Secretary Pete Hegseth on Wednesday described a Pentagon inspector general report on the Signalgate scandal as a “total exoneration,” despite the watchdog finding his use of an encrypted messaging ...

A federal judge in Washington, D.C. ordered relevant agencies Thursday to preserve all communications between March 11 and March 15 in a Signal group chat containing discussions of sensitive military ...

The Atlantic magazine on Wednesday published text messages from top Trump administration officials laying out minute-by-minute operational details and exact weapons to be used in strikes against the ...

With news this week of the messaging app being used to discuss war plans, we get you up to speed on what Signal should be used for—and what it shouldn’t. MIT Technology Review Explains: Let our ...