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 ...

A screengrab of a page from a Pentagon-wide memo warning against using the messaging app Signal. Several days after top national security officials accidentally included a reporter in a Signal chat ...

Troops on active duty have had the book thrown at them for security breaches far less severe than texting strike plans to a journalist. Jeffrey Goldberg, editor-in-chief of The Atlantic, has reported ...

The Signal chat, intended for administrative discussions, reportedly included about a dozen people and revealed the airstrike schedule. Signal is an end-to-end encrypted messaging app touted for its ...

Signal has been the most high-profile app in the news lately because of the controversy surrounding its use by Defense Secretary Pete Hegseth. Signal is a secure messaging platform known for ...

A group of high-ranking US politicians and government officials invited a journalist to their private discussion on Signal messenger of plans for military action in Yemen. When the editor-in-chief of ...

The National Security Agency was reportedly aware of vulnerabilities in the messaging app Signal weeks before 18 top Trump administration national security and defense officials used the app in a ...

Snapchat alerts users for all chat screenshots. Instagram, Facebook, and Messenger do so only with disappearing messages. Telegram and Signal restrict or block screenshots in secret chats. WhatsApp ...