In this July 3, 2021 file photo, a Coop supermarket store in Stockholm, Sweden. Cybersecurity teams worked feverishly Sunday, July 4, 2021, to stem the impact of the single biggest global ransomware attack on record, with some details emerging about how the Russia-linked gang responsible breached the company whose software was the conduit. The Swedish grocery chain Coop said most of its 800 stores would be closed for a second day Sunday because their cash register software supplier was crippled. (Ali Lorestani/TT via AP, File)
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