French supermarket fridges hit by ‘extremely serious’ cyber attack  BBCHackers heat French supermarket fridges, sparking fires and food losses  ReutersFrench Supermarket Refrigeration Sites Hit by Cyberattacks  Bloomberg.com‘Unprecedented’ Cyberattack cripples supermarket fridges across Europe as hackers activate automatic defrosting — delivery and store prices also impacted by incident  Tom’s HardwareFrench supermarket chains say cyberattack forced refrigerator shutdown  France 24