A cybercriminal group that took responsibility for a massive ransomware attack that affected hundreds of businesses this month has disappeared from sight online.
REvil, which is thought to be based in Russia, was nowhere to be found in its usual places on the dark web Tuesday. Many researchers have blamed the group for the huge hack that hit technology services provider Kaseya just hours before the beginning of the Fourth of July weekend.
That attack affected a software used by hundreds of businesses and locked up victims’ files so they could no longer access them. Companies ranging from a grocery chain in Sweden to a school in New Zealand to small Maryland towns were racing to get their systems back online after the attack.
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