French investigators hunt hackers behind cyberattack that hijacked supermarket fridges at Carrefour, Monoprix and others, exposing outdated Danfoss firmware flaws and poor cyber hygiene
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View of the closed frozen food aisle at a supermarket near Nantes after a cyberattack targeted refrigeration systems at French supermarket chains, causing food losses and fires at several stores, France, October 12, 2026. REUTERS/Stephane Mahe