The recent refrigerator hacks wreaking havoc across European supermarkets is a lesson in how shared weaknesses in operational technology (OT) can spread across a whole supply chain.

On the night of Oct. 11, an attacker reportedly compromised refrigeration controls used by hundreds of French supermarkets, triggering extended defrost cycles in refrigerators and freezers across the country. The incident caused millions of euros in damage across roughly 700 affected stores in France alone, spoiling food, damaging equipment, and even reportedly starting some fires in the process. More here