Hack closes Swedish grocery stores as head of targeted software supplier Kaseya says it is preparing a patch Businesses across the US rushed on Saturday to contain a ransomware attack that paralyzed computer networks around the world, a situation complicated in the US by offices being lightly staffed at the start of the Fourth of July weekend. In Sweden, most of the grocery chain Coop’s 800 stores were unable to open because cash registers weren’t working, according to the public broadcaster.

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