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 ...

"As reflected in wide-ranging efforts to compromise Signal accounts, this threat to secure messaging applications is not limited to remote cyber operations such as phishing and malware delivery, but ...

Here's what to know about the messaging app used by Trump Administration officials to discuss military strikes on Yemen.

Forbes contributors publish independent expert analyses and insights. Edward Segal covers crisis-related news, topics, and issues. The Signal encrypted messaging app is seen on a mobile device with ...

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 ...

As President Trump’s National Security team prepared to bomb the Iran-backed Houthi rebels, they got together on the secure communication app, Signal. Somehow, a journalist from The Atlantic was ...