6 min read

From refrigerators to enterprise systems: why IoT security is essential

Published on

28/10/26

What do an industrial refrigerator, a piece of production machinery, and an access control system have in common? They are all devices that, if connected to a network, can become a potential entry point for a cyberattack. In October 2026, incidents involving the refrigeration systems of several European supermarkets brought this issue back into the spotlight, demonstrating how an IT problem can directly impact an organization's daily operations.

Corporate IoT security is not just about protecting devices, but also about the continuity of the processes that depend on them. In a context where infrastructures are increasingly interconnected, understanding risks, managing vulnerabilities, and adopting appropriate protective measures is essential to safeguarding the business.

IoT Security: why connected devices can become a vulnerability

Industrial refrigerators can be connected to the Internet to allow for temperature monitoring, consumption management, alarm reception, and remote technical intervention. These features improve efficiency and simplify facility management, but they also introduce new risks if the systems are not properly protected.

The same principle applies to many other devices used in a company: sensors, cameras, access control systems, industrial machinery, and operational infrastructure components. These technologies fall under the umbrella of the Internet of Things (IoT), the collection of physical devices capable of collecting and exchanging data over a network.

The problem is not connectivity itself, but how it is managed. A device exposed to the Internet without adequate protection can offer attackers an entry point to other systems, especially when access is not controlled, software is outdated, or the network is not properly segmented.

For this reason, protecting the corporate network means knowing all connected devices, understanding what functions they perform, and assessing the associated risks. It is not enough to secure computers and servers; one must also consider the systems and equipment operating behind the scenes, which are often essential for operational continuity.

‍Cyber vulnerabilities and software updates: how to reduce risks

Among the most important aspects of cybersecurity management is the maintenance of connected devices. Outdated software, equipment that has reached the end of its support cycle, and inadequate configurations can leave vulnerabilities open for attackers to exploit.

In fact, the availability of an update does not guarantee that it will actually be installed. A device may continue to function correctly from an operational standpoint while using software that no longer receives security patches. Under these conditions, its seemingly normal operation can hide a risk to the entire infrastructure.

To reduce exposure to cyber threats, companies must adopt a structured approach to vulnerability management. It is important to maintain an up-to-date asset inventory, verify patch availability, prioritize based on risk, and plan for the replacement of unsupported equipment.

When an update is unavailable or cannot be applied, it is necessary to evaluate compensatory measures, such as isolating the device, restricting access, and filtering network traffic.

Another fundamental element is the definition of responsibilities. Security must involve those who manage the IT infrastructure, those who handle the facilities, and the technology vendors. Shared cybersecurity management helps reduce blind spots and allows for faster intervention when a vulnerability emerges.

Corporate cybersecurity: protecting devices to ensure operational continuity

A cyberattack does not necessarily have to result in data theft or the blocking of information systems to cause damage. It can be enough to compromise a technology that supports an essential business process.

For a supermarket, tampering with the refrigeration system can jeopardize food safety. In other contexts, the consequences could affect production, logistics, access control, or the operation of critical services.

Corporate cybersecurity must therefore be considered an integral part of operational risk management. Protecting individual devices is important, but it is also necessary to understand how an incident could spread and which activities it could compromise.

An effective path to improving infrastructure security can start with three actions:

Map and assess assets: identify devices, systems, connections, and dependencies between IT and OT (Operational Technology) infrastructures to pinpoint the most exposed areas;
Reduce the attack surface: limit device exposure, segment networks, control access, and manage vulnerabilities based on their criticality;
Prepare for incidents: monitor security events, define response procedures, and establish business continuity and recovery plans.

These activities are complemented by continuous monitoring, security testing, and periodic verification of the effectiveness of the measures adopted. The goal is not only to prevent attacks but also to reduce the likelihood of them occurring and limit their consequences when they do.

IoT security and cybersecurity: protecting technology means protecting the business

The case of the connected refrigerators serves as a reminder that cybersecurity is not an issue confined to the IT department. In an increasingly digital organization, even an apparently secondary device can play a decisive role in business continuity.

This is why it is important to adopt an integrated vision of cybersecurity that combines technology, processes, and people. Knowing your infrastructure, identifying vulnerabilities, defining responsibilities, and preparing to manage incidents allows you to address risks with greater awareness.

BlueIT supports companies on their journey toward greater cybersecurity with cybersecurity services focused on infrastructure protection, risk management, and IT environment monitoring. From vulnerability assessment to the definition of protective measures, the goal is to help organizations build a more secure and resilient digital environment.

Do you want to understand how well your company's infrastructure is protected?
Contact usto identify the areas that need protection and define a cybersecurity path consistent with your needs.

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