Hackers heated European supermarket fridges to 50C, and the bill lands on energy and industry

The attacks hit Belgium, Estonia, Ireland, Finland, Luxembourg, the Netherlands and Sweden on Monday, The Guardian reported. Temperatures in some units reached 50C (122F). UK meat suppliers were also affected. The National Cyber Security Centre said it was working with the companies involved.

This is the second wave in a month. French supermarket fridges were hit in mid-October. That earlier incident involved legacy technology connected to the internet with default passwords, The Guardian reported.

On Tuesday, the NCSC's director of operations, Paul Chichester, said the national impact in the UK was minimal. He said the attacks were not AI-enabled. They used vulnerabilities that had been "out there for a long period of time", he said at the launch of the agency's annual review.

What the attackers actually hit

They hit controllers, not compressors. Xavier Bellekens is chief executive of the cyberdefence firm Lupovis. He told The Guardian his team had logged 256 attempted attacks from 91 different sources between 20 October and 30 October. The attacks targeted online honeypot traps built to look like Danfoss fridge controllers. Most authentication attempts used the manufacturer's publicly documented factory-default credentials.

The retailer count is fragmentary, and firms describe it differently. Ahold Delhaize said dozens of its Delhaize stores in Belgium and Luxembourg were affected. It said food had to be discarded before operations returned to normal, according to CNBC. Colruyt Group reported five Spar stores in Belgium. Carrefour told the BBC 15 of its Belgian stores were attacked. Intermarché said 15 of its 153 Belgian outlets were hit.

"In most cases, the security measures in place made it possible to quickly contain the attack," an Intermarché spokesperson told CNBC. "However, a few stores did suffer some stock losses, although nothing comparable to the attack in mid-October."

IKEA told CNBC that fridges and freezers at its Mons store in Belgium were affected between Sunday and Monday. The impact on its restaurant and Swedish Food Market was limited. ICA in Sweden, Kesko in Finland, Supervalu in Ireland and One Selver in Estonia also reported disruption. The European Commission said it was in direct contact with national authorities. It convened a meeting of the EU interinstitutional Task Force with ENISA and Europol on Tuesday morning, a spokesperson confirmed to CNBC.

In Britain, the British Association of Independent Meat Suppliers told the BBC that some of its more than 300 members were affected. One company's cold units heated to up to 100C and two others started to defrost. Aims said the units were empty and no produce was lost.

Why an energy column is writing about fridges

Because refrigeration is a power load before it is a data problem. A store's cold chain runs continuously. Pulling it back down after an outage means compressors working harder, longer, often at peak tariff. Retailers are already balancing electricity bills against margins, and spoilage losses land on top of the kWh.

The wider price picture is not easing. Apple told investors on Monday that memory chip prices had risen by an "unprecedented" amount, The Guardian reported. John Ternus, its new chief executive, predicted fourth-quarter memory costs above the previous three months. The squeeze comes from competition with AI datacentres for supply. That is the same demand pressure pushing up power and hardware costs across European industry.

That is the link Brussels keeps making. Mistral chief executive Arthur Mensch said on Monday that Europe faces a "complete trap" if it leaves frontier models to the US and China. He argued the continent has a "balance sheet problem": it lacks the capital and computing capacity to train competitive systems, Politico reported from the Digital Summit in Berlin. Germany's government used the same event to set out plans to become a "sovereign AI nation" by 2030, including at least three European frontier labs.

Industrial policy is moving in the same direction on the energy side. Transport & Environment argued in a policy brief published on 2 November that the EU Emissions Trading System review proposal from July 2026 is not fit to support clean fuel investment in aviation and shipping. It called for 50% of national ETS revenues to be earmarked for decarbonisation in priority sectors.

The German car industry offers the cautionary version. CleanTechnica reported on 29 October that two-thirds of new cars sold in China are electric and 40% of truck sales there are electric. Battery swapping at stations runs on six-minute cycles. Ningde alone produces 300gWh of battery capacity, more than the whole of Europe, the outlet wrote.

The NCSC's chief executive, Richard Horne, called the fridge incidents the "foothills" of a larger threat, with many vulnerabilities waiting to be exploited. His chief technology officer, Ollie Whitehouse, said manufacturers need to build safer connected devices. He said consumers need to accept paying more for them. On the evidence of this week, that bill arrives whether or not anyone agrees to it.