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,

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

Dorsey admitted that his new messaging app had not been reviewed or tested for security issues prior to its launch.