Notorious ransomware group REvil knocked offline, according to report

The attackers used encryption software called DarkSide, which was developed by REvil associates.

REvil, itself, was also responsible for an attack that shut down internationalmeatpacker JBSin May.

Kellermann serves as an adviser to the Secret Service on cybercrime investigations.

That person said in their post that the group’s servers had been compromised.

When asked by Reuters, a White House National Security Council spokesperson declined to comment on the operation specifically.

The FBI declined Reuters' request for comment.