High Security Messaging App Tool Used by US Government Suspends Service After Security Breach - CPO Magazine
CPO Magazine's May 12, 2025 article reports that TeleMessage suspended TM SGNL, an unofficial Signal clone, after a security breach. Casey Ellis, founder of Bugcrowd, warns that secure messaging apps do not guarantee the security of their derivatives and add-ons, and hopes it becomes a prime example of why frameworks are no silver bullet.
Source description, as published
TeleMessage provides secure archiving services for a variety of messaging apps, including Telegram and WhatsApp. In this case, the security breach is of an unofficial Signal clone that parent company Smarsh offers called "TM SGNL."
Inventors / authors: Scott Ikeda