Jack Dorsey's new Bluetooth messaging app, Bitchat, is available on the iOS App Store. The app allows for offline messaging within a 100-meter radius using Bluetooth. While touted for its privacy, security researcher Alex Radocea highlighted impersonation vulnerabilities. Dorsey acknowledged the lack of external security review. Fake Bitchat apps have already appeared on the Google Play Store, prompting warnings from Dorsey.

Prepared by Jonathan Pierce and reviewed by editorial team.