Overnight on 11 October this year, attackers took control of refrigeration controllers in hundreds of French supermarkets. They pushed cold cases to 50°C (122°F), destroyed millions of euros in stock, and started fires in some stores. As detailed by Ars Technica, the root cause didn’t just stem from a highly sophisticated zero-day exploit; it was a textbook example of what happens when IoT devices are deployed without basic security hygiene.
Many of the hijacked controllers were end-of-life units the manufacturer no longer patches. Others ran outdated firmware with known, published fixes. Researchers found thousands of these controllers’ management interfaces exposed directly to the internet.
The controllers sat on wired IP networks, not cellular. But the failures that made the attack possible don’t depend on how a device connects: exposed management interfaces, weak access controls, and end of life firmware. Those same gaps exist right now in fleet, healthcare, manufacturing, retail, and utility deployments, including cellular ones. The question isn’t how these controllers were connected. It’s whether your devices would hold up.
Why legacy devices leave security blind
Much of the OT running today sits on embedded operating systems that are not likely supported anymore. You can’t install modern security agents on them. When there’s no agent on the device and its management interface faces the internet, traditional IT security has nothing to watch. Once an attacker has a working credential or a known exploit, nothing stops them from escalating access or pushing equipment past its safe physical limits.
Applying Zero Trust: The Agentless Advantage
Approaching every IoT and OT deployment with a Zero Trust framework gives enterprises a structured toolset to counter these specific design gaps, helping minimize business impact even on outdated hardware.
This is where Aeris IoT Watchtower® changes the game. Connected seamlessly with the Aeris IoT Accelerator, Watchtower natively supports a Zero Trust framework for IoT and OT deployments over cellular or Wi-Fi-over-cellular without ever needing to touch the device firmware, and without the need for an agent. By utilizing Watchtower with Awareness and Enforcement, enterprises establish the foundation for the transition to entirely agentless Zero Trust deployments. This provides a structured toolset to help:
- Prevent (Agentless Execution): Through micro-segmentation and identity verification handled at the network level, unauthorized network access can be blocked. Your legacy deployments and unsupported OS environments can be brought under a Zero Trust umbrella without requiring localized software agents.
- Detect (Timely Awareness): Traffic patterns and network behaviors are monitored continuously. You don’t need to wait for a public disclosure on Shodan; anomalous behavior can be detected natively via the connectivity layer.
- Respond (Contained Impact): By enforcing strict Zero Trust principles, you help ensure that devices only communicate with authorized endpoints. Even if an automated exploit is developed for a legacy device, network isolation helps prevent lateral movement, limiting the domino effect before an unauthorized access attempt causes physical damage.
The lesson from this multi-million-dollar hardware exploit isn’t just about updating firmware. It’s a stark reminder that IoT and OT security fundamentals remain the most critical line of defense, and relying on outdated architectures eventually could have devastating operational and financial consequences.
As a trusted partner to over 7,000 customers worldwide and managing secure connectivity in 180 countries, Aeris has the proven scale and expertise to power and protect the connected world. Moving beyond outdated infrastructure is critical, and deploying agentless Zero Trust architecture is one of the most effective steps you can take today to protect tomorrow’s operations.
Ready to secure your connected devices?
Reach out to Aeris for a meeting or one of our partners around the globe.
