More European Supermarkets Are Getting Their Freezers Hacked

Cooling Systems Tampered With Across Four Countries

Supermarkets in Belgium, Sweden, Luxembourg, and Estonia have had their cooling systems tampered with, marking a growing wave of attacks targeting the connected refrigeration systems that keep stores running.

The incidents reflect a broader and increasingly urgent concern in retail cybersecurity: the Internet of Things (IoT) devices that manage everything from freezer temperatures to energy consumption are often poorly secured, and attackers are taking notice. These systems typically run on legacy hardware and firmware with weak default credentials, infrequent patching, and limited network segmentation — an ideal combination for exploitation.

As of 2026, refrigerated and frozen goods remain among the most theft- and spoilage-sensitive assets in grocery retail, and even brief cooling failures can translate into significant financial losses, food-safety risks, and regulatory scrutiny. Smart refrigeration controllers are now standard in most European chains, expanding the attack surface with every new store.

Security researchers have repeatedly warned that building-management and refrigeration controllers are frequently exposed to the public internet with minimal authentication. In several documented cases, tampering has involved unauthorized changes to set points, sensor spoofing, or manipulated alarms that delayed staff response.

The latest incidents underline the need for retailers to treat refrigeration infrastructure as critical security assets — applying network segmentation, strong credentials, continuous monitoring, and prompt firmware updates. As connected cooling systems become more prevalent across European supermarkets, the risk of disruption is only likely to grow.

This article is based on reporting by Jess Weatherbed.

via The Verge