The CIA’s chief data officer testified in court last month that he was unable to locate any “substantive messages” from CIA ...

The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the commercial Signal app to coordinate official work on issues involving China, ...

Democratic leaders of key House committees are reigniting calling for national security adviser Mike Waltz to step down.

A security breach involving a Signal app group chat on diplomatic discussions is blamed on iPhone's auto-suggested contact ...

US president defends key security official after journalist says he was added to group chat about air strikes.

Top Trump administration national security officials’ use of the messaging app Signal is raising new ... pushed back against concerns Signal is insecure because it is not an official government ...

Mike Waltz faces criticism for using Gmail for official duties, with concerns raised about the management of sensitive communications in Trump's admin ...

The president of Signal defended the security of the encrypted messaging app on Tuesday after a bombshell ... device or network security. Amid these concerns, the official X account for Signal ...

The Atlantic’s Editor-in-Chief was added to a government group chat on messaging app Signal, which is raising security concerns about where sensitive military conversations take place.

The so-called vulnerabilities mentioned regarding Signal are not with the app or its security. Instead, the issues are related to what is always the weakest link with any digital communications ...

Beyond concerns about security, Signal and other similar apps may allow users to skirt open records laws. Without special archiving software, the messages frequently aren’t returned under public ...