Hackers Target Hundreds of French Supermarkets, Heating Refrigeration Systems to 50°C

## Executive summary Hackers manipulated Danfoss refrigeration control systems at multiple French supermarkets overnight, abusing older control software to force continuous defrost cycles and high temperatures that spoiled fresh and frozen food and caused localized losses (tens to hundreds of thousands of euros) and industry estimates of multimillion-euro impact; the incident demonstrates OT manipulation with physical consequences but the report lacks specific exploited vulnerability, controller model, or initial access details.