French supermarket fridges get hacked, heating to 122°F and sparking fires

Hackers targeted hundreds of French supermarkets in a cyberattack that reportedly caused refrigerators and freezers to overheat, spoiling food and sparking fires.

Fridges at French supermarket chains Carrefour, Monoprix, the Les Mousquetaires-owned Intermarché, and Coopérative U, among others, all saw fridges heat up to as much as 50 degrees Celsius (122 degrees Fahrenheit) overnight, Reuters reported on Monday.

Coopérative U's CEO Dominique Schelcher confirmed that cyberattacks had affected "refrigeration production facilities of several stores."

"Attacking equipment that is essential to the preservation of fresh products and the food supply of the French people is extremely serious and unprecedented. It is unacceptable," Schelcher said in a LinkedIn post.

CNBC has reached out to Carrefour, Monoprix, Intermarché, Coopérative U, and E Leclerc for comment but did not immediately hear back.

Felix Aime, a senior cyber threat intelligence analyst at Sekoia Threat Detection and Research, said the attack affected several European countries, including Spain, Portugal, Poland, Germany and Belgium, per the Reuters article.

"I strongly condemn the cyberattack targeting food products at @intermarche @CooperativeU @Leclerc," European Commissioner for Agriculture and Food Christophe Hansen said in a post on X on Monday.

"Food security requires more attention at all levels. Because the weaponization of food has become a reality."

Les Mousquetaires said it was expecting the damages, which affected around 180 stores, to reach "several million euros in losses," in an email to CNBC.

It said some fresh and frozen food displays have been out of service after the cyberattack affected one of its service providers responsible for managing refrigeration systems inside some stores.

"Intermarché and Netto have taken all necessary precautions to remove and dispose of any affected products as quickly as possible, to ensure consumer safety," the Les Mousquetaires spokesperson said. "In some stores, the overheating of equipment resulted in smoke, but no fires have been reported."

They're now awaiting findings from a court-appointed bailiff and insurance experts to get more precise figures on damages.

Stop & Shop owner Ahold Delhaize, which owns popular Dutch supermarket chain Albert Heijn, said it was experiencing a "security issue within its network," and that systems had been taken offline. It said its stores are still open .

This comes amid a broader wave of cyberattacks and cybercrimes, which experts are warning are being enhanced by AI. British online fashion retailer Asos experienced a cybersecurity breach last week which revealed some customers' personal information.

Meanwhile, a small power plant in the U.K. was shut down for four days in July after a cyberattack which was suspected to be linked to Iran.

Interpol's global chief information security officer Bjorn R. Watn recently told CNBC that AI can be used to target multiple victims at once, and is increasing the scale and speed of cyberattacks. "It's an evolution and not a revolution."