Cyberattack shuts down refrigerators at French supermarkets post, oktober 12, 2026oktober 13, 2026 Attackers remotely defrosted refrigerators at multiple French supermarket chains overnight in a cyberattack that reportedly targeted Danfoss refrigeration controllers. Victims include Intermarché, Coopérative U, Carrefour Market, Monoprix, Leclerc, and Super U, with French outlets reporting that the attack affected 250 to 350 stores, causing significant financial losses and food waste. The threat actors hijacked refrigeration controllers running older versions of Danfoss control software on Sunday night and used them to raise supermarket refrigerator temperatures by triggering a built-in automatic defrosting system. Cyberattack shuts down refrigerators at French supermarkets: Cyberattack shuts down refrigerators at French supermarkets critical infrastructure supply chain attack 2026