'We won't pay any ransom': notorious hacker gang targets US renewable energy giant
Invenergy investigates 'unauthorised activity' after REvil group said to claim access to sensitive data
Chicago-based Invenergy found unauthorised access to its systems in a breach claimed by REvil, which targets the IT systems of major corporations and demands ransoms to release data or prevent it being made public, said multiple media outlets including Bloomberg and the Financial Times.