Cyberattacks on connected refrigeration target French blood and food stores

Cold Rooms Heating Up Across Europe and the United States

Blood and plasma reserves in France faced acute thermal disruption this week after attackers breached internet-connected refrigeration infrastructure. Three separate sites handling plasma and blood bags experienced critical temperature spikes on November 2, though rapid intervention by staff and automated alarm facilities prevented actual damage to the samples. The Établissement Français du Sang confirmed the breach on Wednesday, noting that fail-safe protocols kept storage units from spoiling the vital supplies.

The French blood-storage incident is far from isolated. Supermarket chains across 11 European countries have absorbed parallel cyberattacks in recent days, sending internal refrigeration temperatures soaring and forcing retailers to trash massive volumes of food. Similar attacks struck hundreds of French stores through October, while roughly six commissaries and grocery stores on United States military bases suffered identical temperature spikes back in August. The Pentagon is investigating the incidents and is collaborating with French law enforcement, Reuters reported.

Nov 6, 2026: Hackers Target Refrigeration Systems in Europe, Threatening Food and Medicine

Vulnerable Danfoss Controllers Exposed to the Internet

Investigators tracing the intrusion vectors point toward unpatched temperature controllers manufactured by Danish firm Danfoss. Many of the targeted systems were directly exposed to the public internet running older software versions that allegedly relied on predictable, date-based weak passwords. Security researchers studying the incidents note that the exploits required minimal technical sophistication.

Danfoss did not return requests for comment from reporters regarding the software flaws or the widespread exploitation of its hardware.

The Fragility of Modern Connected Infrastructure

“It’s been true for more than a decade now that our dependence on connected technology is growing faster than our collective will to protect it, which has exposed us to accidents, adversaries, and now potentially agents,” says Josh Corman, executive in residence for public safety and resilience at the nonprofit Institute for Security and Technology. Corman emphasizes that modern cold-chain architectures remain dangerously fragile despite managing critical supply lines.

Authorities have not yet established who is behind the multi-country spree, nor whether the operations stem from a single centralized actor or a decentralized group of opportunistic attackers.

Photo of author

Sophie Lin - Technology Editor

Sophie is a tech innovator and acclaimed tech writer recognized by the Online News Association. She translates the fast-paced world of technology, AI, and digital trends into compelling stories for readers of all backgrounds.

Alcaraz saves two match points to beat Fritz in Paris Masters

Paramount Sets 2028 Release for G.I. Joe Reboot