One security expert, Alex Radocea, tested Bitchat and discovered that someone could pretend to be someone else on the app. This is because Bitchat's system for verifying identity,

Here is everything you should know about Bitchat, the messaging app by Jack Dorsey, which can work without an Internet connection.

Jack Dorsey's Bitchat, a decentralized messaging app, enables offline communication via Bluetooth mesh networking, ensuring encrypted message exchange