A cyberattack hit the American MSP provider Kaseya, and the experts have claimed that this attack is one of the largest in the history of ransomware attacks. The attackers behind this incident are the ransomware group REvil. The operator of REvil has demanded $70 million in bitcoins to unlock all the encrypted systems. The REvil ransomware is a part of Ransomware-as-a-Service (RaaS) where a set of people maintain the source code and other affiliate groups distribute the ransomware.”]
Source: https://gbhackers.com/kaseyas-revil-ransomware-attack/