Experts Warn of Ongoing Danger Despite REvil Going Dark 20 hours ago Ransomware gang REvil may have gone dark, with its sites offline, but experts are warning against becoming complacent. REvil has been behind two recent, high-profile ransomware attacks. The group was behind the attack that crippled JBS, one of the world’s leading meat processors. They were also behind the largest-ever ransomware attack on Kaseya. REvil appears to have gone dark, with all of its websites going offline. Some believe the group may have received a subpoena, prompting the group to erase their servers in an effort to avoid prosecution.