How can a supermarket protect its refrigeration from a cyberattack?

Two layers. First, the controllers: take them off the internet, update their firmware and segment the network, as the authorities recommend. Second, independent temperature monitoring: battery sensors in each cooler, on their own network, that call someone the moment a cooler leaves its range, even if the controller has been tampered with.

Does independent monitoring stop the attack?

No. It does not touch the refrigeration controller. It makes sure someone finds out within minutes, by phone call, instead of when the store opens, so the equipment can be isolated and the stock saved.

Why not use the refrigeration controller's own alarms?

Because if the controller is compromised or fails, its alarms depend on the same device. An independent sensor measures the real temperature inside the cooler and reports over a different network.

Can the platform run on our own servers?

Yes. It runs in our cloud (AWS Frankfurt for Europe, AWS US for the rest of the world) or on-premise on your servers, with the same features.

What happens if someone jams or unplugs the sensors?

A sensor or gateway that stops reporting raises its own alarm, so silence is treated as a problem, not as everything being fine.

IoT Solution

Independent refrigeration monitoring: know within minutes if a cooler is warming

In October 2026 attackers took over the refrigeration controllers of hundreds of supermarkets in France and drove coolers to around 50 °C overnight. A second layer of battery sensors, on its own network and separate from the controller, sends a phone call the moment a cooler leaves its range, even if the controller says everything is fine.

Try Demo Contact

24/7

Temperature of every cooler and freezer, independent of the controller

Alarm channels: voice call, SMS, WhatsApp, email and push

Own gateway, outside the store network and the refrigeration network

On-prem

Platform in our cloud or on your own servers

150,000+

Devices connected to the platform

Alarm channels, including voice call

99.9%

Platform availability

Supermarket chains

Hundreds of stores, each with its own on-call contact, and a central view for the operations team.

Cold storage warehouses

A second reading of every chamber that does not trust the plant controller alone.

Convenience stores and franchises

Small stores without staff at night that still need someone to know when a freezer fails.

A second line that does not depend on the controller

If the refrigeration controller is compromised or simply fails, it may not raise the alarm. Independent sensors do.

Battery probes in every cooler

Wireless temperature sensors inside cabinets, cold rooms and freezers. No wiring to the refrigeration controller and no access to it.

Its own network

Sensors talk LoRaWAN to a 4G gateway that does not sit on the store network or the refrigeration network and does not need to be reachable from the internet.

A call at 3 a.m.

Thresholds per cooler. Out of range, the alarm goes out by voice call, SMS, WhatsApp, email and push to whoever is on duty for that store.

Silence is an alarm too

If a sensor or the gateway stops reporting, that is an alarm, so jamming or unplugging does not go unnoticed.

Every store on one map

A chain sees every store and every cooler at once, so a pattern across several stores at the same hour stands out immediately.

Reference sensors

Catalog devices we already integrate, with their decoder ready. For each installation we pick the model that fits best.

All LoRaWAN devices

Supermarket refrigeration cyberattacks: why an independent temperature alarm matters

The attacks of October and November 2026 did not need to break into the store's IT network: according to press reports, they reached refrigeration controllers exposed to the internet with outdated firmware and changed their settings overnight. Stock was lost because nobody found out until morning.

What happened

On the night of 11 to 12 October 2026, refrigeration systems in hundreds of supermarkets in France were driven to around 50 °C, with food losses and some fires, as reported by CNN, Al Jazeera and CBS News. Similar overnight temperature spikes followed in early November in several other European countries, and US agencies issued a joint alert on intrusions into refrigeration and cold storage controllers. The advice that comes with these alerts is to take controllers off the internet, update their firmware and segment the network.

Why a second, independent layer

Securing the controllers is the first step, but if a controller is compromised or fails, its own alarms may stay silent. Independent sensors measure the real temperature inside the cooler, travel over a different network and alert through different channels. They do not stop an attack on the controller; they make sure someone knows within minutes instead of at opening time, which is what decides whether the stock is saved.

How it is built

Sensors: battery LoRaWAN temperature probes in each cabinet, cold room and freezer, with no connection to the refrigeration controller.
Network: a 4G gateway per store, outside the store and refrigeration networks; it does not need to be reachable from the internet.
Platform: in our cloud (AWS Frankfurt or US) or on-premise on the chain's own servers, for companies that want to keep it inside.
Alarms: per cooler and per store, by voice call, SMS, WhatsApp, email and push, plus an alarm when a sensor or gateway goes silent.

How to start

Start with a few stores: sensors are fixed inside the coolers without touching the refrigeration installation, and the gateway only needs power. Once the alarms and on-call contacts are tested, the rollout is the same kit repeated store by store. The same platform also keeps the temperature records for food safety, as on our cold chain monitoring page.

Frequently asked questions

Want an independent alarm in your stores?

Tell us how many stores and coolers you have and we'll send you a closed quote for a pilot.

Schedule a Call Contact