A free master decryptor for the REvil ransomware operation has been released, allowing all victims encrypted before the gang disappeared to recover their files for free. The REvil master decryption key was created by cybersecurity firm Bitdefender in collaboration with a trusted law enforcement partner. Law enforcement likely compromised REvil servers and compromised Kaseya’s servers to create the master decryptor. The gang has returned to attacking victims earlier this month, but the release of this decryptor comes as a massive boon for existing victims who chose not to pay.”]