A disgruntled developer seems to be responsible for the leak of the builder for the latest encryptor of the LockBit ransomware gang
The latest version of the encryptor, version 3.0, was released by the gang in June. According to the gang, LockBit 3.0 has important novelties such as a bug bounty program, Zcash payment, and new extortion tactics. The gang has been active since at least 2019 and today it is one of the most active ransomware gangs
https://securityaffairs.co/wordpress/136056/data-breach/lockbit-3-0-builder-leak.html