Coop, other ransomware-hit firms, could take weeks to recover, say experts

Staff enter the headquarters of information technology firm Kaseya in Miami, Florida, U.S., in an undated still image from video. Kaseya/Handout via REUTERS

STOCKHOLM (Reuters) - 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.