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

Jack Dorsey, the former Twitter CEO, has launched a new messaging app that does not rely on the internet. Called Bitchat, the app uses Bluetooth to let people send messages directly to one another. It is designed to keep working even when internet access is blocked,

Twitter co-founder Jack Dorsey is launching a new messaging app that he claims needs no internet or phone numbers. It’s an apparent play on the entrepreneur’s fondness for decentralized technology. On Sunday,