Pierluigi Paganini reports:
Coop is one of the largest retail and grocery providers in Sweden, with approximately 800 stores across the country. The stores are co-owned by 3.5 million members in 29 consumer associations. All surplus that is created in the business goes back to the members or is reinvested in the business, which creates a circular cycle.
The Cactus ransomware group claims to have hacked Coop and is threatening to disclose a huge amount of personal information, over 21 thousand directories.
The Cactus ransomware group added Coop to the list of victims on its Tor leak site.
Read more at Security Affairs. There is a small archive with alleged proof of claims and a folder tree available at this point.