# Hackers target connected refrigeration units in France

> **Key takeaway:** Attackers manipulated temperature regulation software in supermarket refrigeration units, causing temperatures to rise to 50C.

**Published:** 2026-10-14T14:10:22+00:00 
**Source:** Bruce Schneier Security Affairs 
**Category:** cybersecurity 
**Canonical URL:** https://fosswire.org/news/hackers-target-connected-refrigeration-units-in-france.html 

## Summary
A cyberattack in France targeted the software controlling temperature regulation in supermarket refrigeration units. According to an affected supermarket chain, hackers forced some units to heat up to 50C overnight. Danfoss stated that the compromised units were older models with security software that could not be updated to mitigate identified risks.

## Vulnerability in legacy IoT hardware
- Attackers gained control over **temperature regulation software**.
- The exploit forced units to maintain high temperatures (up to **50C**) rather than performing standard overnight defrost cycles.
- The affected hardware consists of **older models** that lack the capability for security software updates.

## Why it matters
The incident highlights the security risks inherent in IoT devices that lack updateable firmware, leaving legacy hardware permanently vulnerable to identified threats.