Cold Chain

On the night of October 11 to 12, 2026, attackers remotely took control of refrigeration systems in hundreds of French supermarkets, pushing temperatures as high as 50 degrees Celsius and spoiling food. In early November, similar incidents were reported in several other European countries, and an attempt on blood-bank plasma freezers in France was reported as thwarted. On November 9, French authorities named an Iranian Revolutionary Guard-affiliated unit as responsible.

Cold Chain is a clear, even-handed guide to what has been reported and what remains unknown. It explains how supermarket refrigeration controllers work, what researchers disclosed beforehand, what the suppliers and retailers said, how the numbers differ by outlet, who was suspected before France's attribution, what officials cited as evidence, and what experts say. It attributes every claim, takes no side, and makes no predictions.

Inside you will find:
The overnight attack in France on October 12, 2026How many stores were hit, and why the counts differHow supermarket refrigeration controllers workThe August research on Danfoss controllersWhat suppliers, retailers and service firms saidThe second wave across seven European countriesThe blood-bank plasma freezers incidentThe suspicions and denials before November 9France names an Iranian unit, and what was citedEarlier incidents in Israel and at US commissariesWhat security experts say, and where they disagreeHow to read cyber-attribution news
Written for readers, students, journalists, and anyone trying to make sense of the headlines, the book covers events as publicly reported through November 10, 2026. It is general information, not security, legal, business, or investment advice, and it takes no side.