REvil ransomware attack: Grocery chain Coop and other affected firms globally may take weeks to recover

Computer systems of several companies across the world, including 800 physical grocery stores of Sweden’s Coop, that were shut down after attacked by REvil ransomware could take weeks to recover, cyber security experts said.

Hackers from the REvil cybercrime gang compromised systems of IT firm Kaseya and malware trickled down to its resellers and reached end customers such as Coop who used its software.

The ransomware locked data in encrypted files and late on Sunday hackers demanded $70 million (roughly Rs. 520 crores) to restore the data.

The REvil actors had claimed that a million machines were compromised, said Mark Loman, director of engineering at cybersecurity firm Sophos.