Hackers used the French Blood Establishment’s maintenance provider Coolworld to order cold rooms to switch from a set point of −30°C to 110°C. The attack, which occurred overnight from November 1 to 2, targeted facilities in Bourgogne-Franche-Comté that contained public health surveillance samples and plasma bags. An on-call technician raised the alarm and restored the correct temperature before any stock was lost, while the Health Ministry said the transfusion chain was never interrupted and no patient was exposed. Three weeks earlier, hundreds of French supermarkets, followed by stores in Belgium, Ireland and Sweden, had experienced the same temperature manipulation. Nevertheless, the French cybersecurity agency had warned that remote management interfaces for refrigeration controllers were accessible over the Internet and recommended removing them from the network, locking remote access, applying updates and checking temperature settings.
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