Cyber Attackers Defrost French Supermarket Freezers, Causing Millions in Losses

Cyber attackers have targeted hundreds of supermarkets across France, manipulating refrigeration systems to defrost freezers and causing millions of euros in losses. The motive behind the widespread attack, which occurred overnight on Sunday, remains unknown.

Attackers reportedly programmed the refrigeration units to blow hot air at 50 degrees Celsius (122 degrees Fahrenheit), causing internal temperatures to rise to 36 degrees Celsius (96.8 degrees Fahrenheit). This led to the spoilage of a significant quantity of produce, forcing the disposal of fresh and frozen products.

Intermarché reported that approximately 150 to 200 of its stores were affected, with the company estimating losses to be in the "several million euros." Coopérative U stated that around 100 of its supermarkets were targeted. E.Leclerc indicated that a cyber attack affected one of its refrigeration equipment suppliers, enabling hackers to remotely trigger the forced defrosting of refrigeration systems in numerous stores.

Prosecutors have confirmed the incident and launched an investigation into the "large-scale cyberattack affecting the refrigerators of several major food retail chains across France." The probe aims to identify victims and investigate the reported losses of foodstuffs and outbreaks of fires that occurred overnight as a result of the breach.

Dominique Schelcher, CEO of Coopérative U, described the attack as "unprecedented" and "extremely serious," deeming it unacceptable to target equipment essential for food preservation and the supply chain. He confirmed that the company's teams are mobilized to restore operations and called for an investigation to shed full light on the attack.

Intermarché warned that insurance policies might not cover this type of in-store incident, highlighting the financial and logistical challenges for affected businesses. One Intermarché store manager in Haguenau estimated losses at her location alone to be around €50,000.

While Carrefour Market and Monoprix are also believed to have been targeted, these companies have not yet confirmed the extent of their involvement. France's ministry of commerce stated it is in contact with distributors but provided no further details.

The incident occurs amidst growing concerns over the potential impact of cyberattacks on critical infrastructure in Europe. President Emmanuel Macron previously ordered measures to protect French critical infrastructure from Russian "hybrid attacks."