Cyberattacks on refrigeration systems: How supermarkets must protect their stock – Creative image on the topic, with AI: Xpert.Digital
When hackers manipulate refrigeration: The economic risk for the food trade
Spoiled goods instead of data theft: The new threat to Europe's food trade
Networked cooling systems in the crosshairs: How cyberattacks cause real damage
Cyberattacks on networked refrigeration systems can have immediate consequences for the food retail sector: If temperature controls are manipulated, goods risk becoming unsaleable, resulting in significant costs. Since the beginning of October, such attacks have been reported in eight European countries, including France, Belgium, Sweden, and Germany. So far, no threat to the general food supply has been identified. Nevertheless, these incidents demonstrate how closely digital security and day-to-day operations are now intertwined. Remote maintenance and centralized monitoring can streamline processes – but inadequately protected access points create new risks. Therefore, it is crucial how well retailers understand their systems, how they can restrict access, how they can detect anomalies, and how quickly they can react in an emergency. The attacks are not evidence of a widespread supply crisis, but they are a clear warning sign: Anyone using digital technology to control physical processes must treat its security as an integral part of their operations.
The vulnerable cold chain: How cyberattacks are putting economic pressure on the food trade
Those who control the temperature don't need to disrupt supply chains to destroy goods
The manipulation of networked refrigeration systems demonstrates how quickly digital security problems can translate into real economic damage. A mere intervention in the control system is enough to alter the conditions under which food is stored. Goods that are still marketable may then become waste. The damage arises not only from a prolonged operational downtime or the loss of sensitive data, but also from the fact that a technical system can no longer reliably perform its intended function.
Since the beginning of October, similar attacks have been reported in France, Belgium, Sweden, Ireland, the Netherlands, Estonia, Finland, and Germany. In these countries, attackers remotely manipulated refrigeration and freezing systems. This rendered food unsaleable, forcing it to be disposed of. So far, no threat to the general food supply has been identified. This distinction is crucial: the incidents demonstrate a specific vulnerability of individual facilities and businesses, but not yet a widespread supply crisis.
Nevertheless, the attacks are economically significant. They affect an area where the value of goods, time, and technical reliability are particularly closely intertwined. While some operational disruptions can be rectified later, once food supplies are damaged, they can permanently lose their economic value.
This changes the way we view cybersecurity in retail. It's not just a matter of protecting customer data or functioning point-of-sale systems. It's equally about securing inventory, operational processes, and physical infrastructure.
The cooling system is part of the business model
Refrigeration technology often appears in everyday life as background infrastructure. It's only noticed when it fails, but otherwise treated primarily as necessary operational equipment. From an economic perspective, this view is too narrow. For chilled and frozen products, reliable temperature control is a prerequisite for a retailer to be able to offer saleable goods at all.
The system thus protects not only products but also capital already tied up in inventory. Purchasing, transport, receiving, and storage all incur costs before an item is sold. If the goods become unsaleable due to tampered refrigeration, this expense cannot simply be reversed. At the same time, the expected sales revenue is lost.
There is also a time factor. An affected business must determine which stocks are still usable, which products need to be blocked, and when replacements will be available. Even if the technical malfunction is quickly resolved, economic normalization can take longer. Between restored refrigeration and fully restocked shelves lies an organizational process.
The refrigeration system is therefore not merely a cost factor in building operations. It ensures the usability of a portion of the inventory. Its digital safeguarding must therefore be measured against the potential for losses and not solely by the acquisition costs of the control system.
Networking saves effort, but creates new dependencies
The networking of technical systems follows a logical economic logic. Remote monitoring and maintenance can shorten response times, detect malfunctions more quickly, and simplify the management of multiple locations. A service provider doesn't need to be on-site for every diagnosis. A retail company can centrally monitor technical conditions and better coordinate its support.
These advantages don't disappear because of the recent attacks. However, they have a downside: Every remote access creates an additional connection between a physical system and a digital environment. If this connection is inadequately protected, a maintenance interface can become a gateway for attack.
The crucial question, therefore, is not whether cooling systems should be networked in general. Completely abandoning digital functions would also mean foregoing their operational advantages. The economically relevant question is rather how to combine necessary accessibility with effective access control.
A system must be accessible to authorized employees or service providers without being open to any external actors. This separation appears to have been reliably failed with publicly accessible and inadequately secured user interfaces.
The real problem, therefore, does not lie in digitalization itself. It lies in a digitalization whose security architecture does not keep pace with the operational importance of the controlled systems.
Publicly accessible controls make local weaknesses scalable
Potential entry points include known security vulnerabilities in networked control systems and publicly accessible web interfaces. This combination is particularly problematic. A vulnerability is then not limited to a hard-to-reach system, but can, in principle, be exploited from outside the company.
In August, Claroty reported vulnerabilities and identified thousands of publicly accessible management interfaces. This number should not be confused with the number of successful attacks. An accessible interface is not automatically compromised, just as not every existing vulnerability is necessarily exploited. Nevertheless, such a scale demonstrates that the issue extends beyond a few unusually configured sites.
This creates an economic scaling problem. If an attacker has to develop a completely new access method for each company, their effort and risk increase. If similar devices with similar vulnerabilities are publicly accessible, the same technical approach can potentially be applied to multiple targets.
For operators, this means a shift in risk perception. The supposed inconspicuousness of a single supermarket offers no reliable protection. A location doesn't have to be particularly large or politically significant to become a target due to a widespread technical characteristic.
The attack surface is therefore determined not only by the attractiveness of a company, but also by the visibility and uniformity of its technical systems.
Known weaknesses pose a problem for operational implementation
As early as 2025, the security provider Armis warned of vulnerabilities in cooling system controllers. Among the affected devices were those from Copeland. A proprietary protocol apparently allowed access without authentication. In the case of certain devices, the situation was further complicated by the fact that they were no longer supported by the manufacturer.
Danfoss controllers were also targeted. Security vulnerabilities had reportedly been known since July. Claroty's investigations, published in August, described, among other things, insecure command processing and undocumented functions identified through the analysis of firmware and web services.
This timeline highlights a key operational challenge: Between the discovery of a vulnerability and its actual remediation, there is often an organizational gap. A published warning alone does not protect any equipment. Only the identification of the vulnerability within the company's own equipment inventory, a technical assessment, and the implementation of a corrective action will change the risk.
It cannot be assumed that every affected company had the same options for action. Updates, replacement devices, and secure transition solutions may be available to varying degrees depending on the system. This is precisely why clear responsibilities are necessary.
The economic weakness is not solely due to faulty software. It also arises where information about security vulnerabilities does not reliably reach the people who can actually operate, maintain, or replace the systems.
The seemingly cheap old device can become expensive in the long run
Discontinued control systems highlight the conflict between technical lifespan and digital maintainability. A cooling system may still perform its physical function, while its digital control system has become problematic from a safety perspective. For the operator, a replacement initially appears to be an investment in a system that still functions in everyday use.
However, this analysis only considers a portion of the costs. The overall economic picture includes not only acquisition and maintenance, but also potential losses of goods, business interruptions, emergency responses, and the effort required to restore trust in the business.
A hypothetical example illustrates the logic: If the total loss from a single incident is €80,000 and the annual probability of occurrence is hypothetically set at five percent, the calculated expected loss is €4,000 per year. These are not measured industry data, but rather arbitrarily chosen assumptions. They merely demonstrate why a security investment can be economically worthwhile even without an immediately visible increase in revenue.
However, such an expected value is not sufficient on its own. A company must also be able to cope with the fact that the actual damage occurs suddenly and completely. For a single location, the same loss can be considerably more severe than for a large group.
The cheapest device is therefore not necessarily the most economically advantageous system. The decisive factors are the costs and risks over the entire intended service life.
The real damage extends beyond spoiled goods
The most immediately visible damage is the loss of goods. However, a comprehensive business analysis must consider further consequences. Affected inventory must be inspected, separated, and, if necessary, disposed of. Employees are tied up with additional tasks. Technical service providers must investigate the cause and secure operations.
Additional costs may arise for replacement procurement, special deliveries, and altered supply chains. These expenses depend on the specific circumstances of each case and should not be presented as having already occurred. However, they should be included in the planning of a realistic damage scenario.
Lost revenue also needs to be considered in a nuanced way. Not every sale that fails to materialize during a disruption is automatically lost permanently. Some purchases are made up for later or shifted to other products. Others go to competitors. Furthermore, the impact on the bottom line is not solely on the total lost revenue, but also, among other things, on the lost contribution margin.
Loss of goods, lost revenue, and additional recovery costs must therefore be clearly separated. Otherwise, both exaggerations and systematic underestimations are likely.
A reliable analysis captures the entire chain of events while avoiding double counting. This business-like precision is crucial when companies decide which protective measures are appropriate and which investments should be implemented first.
Many countries do not necessarily mean a European supply crisis
The geographical distribution across eight European countries lends considerable attention to the incidents. It shows that the problem transcends national borders. However, this does not automatically imply that all attacks were coordinated, followed the same technical procedure, or originated from the same group.
Likewise, the number of affected countries is not a sufficient measure of the overall economic damage. Additional information would be needed: the number of actually manipulated sites, the duration of the disruptions, the quantities of goods affected, and the costs of restoration. Without such data, no reliable estimate of the damage across Europe can be given.
The current finding that there was no danger to the general food supply limits the scope of the events. However, it does not diminish their significance. A risk can be serious for individual companies without necessarily triggering a supply problem across the entire economy.
For a potential systemic escalation, it would be crucial whether numerous locations fail simultaneously, whether shared service providers are affected, and whether backup capacities are sufficient. It is not the physical landscape alone, but rather the structure of dependencies that determines resilience.
The appropriate conclusion is therefore neither to sound the all-clear nor to sound the alarm. The incidents are a concrete warning signal of technical and organizational weaknesses, the true extent of which has not yet been fully quantified.
Centralization can strengthen security and pool damages
Trading companies can centrally organize technical support to achieve uniform standards and economic economies of scale. Joint monitoring facilitates oversight. Standardized systems can simplify maintenance, spare parts management, and training.
However, this same standardization can create common causes of failure. If many sites use the same vulnerable control system or are accessible via the same inadequately protected remote maintenance access point, a single security issue can affect multiple facilities.
The economic challenge, therefore, lies in preserving the advantages of centralization without allowing any disruption to propagate throughout the entire organization. Central visibility need not be linked to unlimited central intervention rights. Likewise, all locations do not need to be technically interconnected.
A sound security concept limits the potential damage radius. If one access point is compromised, this should not automatically lead to control over all systems. Different access rights, separate areas, and traceable authorizations can be functionally more important than the sheer number of security products deployed.
From a business perspective, this is a form of risk diversification. It doesn't prevent every incident, but it can limit its consequences. Especially with recurring technical architectures, this limitation determines whether a local problem escalates into a company-wide crisis.
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The importance of reaction speed in cyberattacks
Service providers become part of the company's own security architecture
The attack on the cooling system of a blood bank in France in early November highlights the importance of technical service providers. The attack was carried out via such a service provider. Monitoring of the blood bank prevented damage to the stored blood products.
This does not imply a blanket rejection of outsourced maintenance. External specialists can be indispensable for safe operations. However, the incident demonstrates that a company's security boundaries do not end at its own workplaces or buildings.
Granting a service provider access to technical systems creates a business dependency. This dependency must be assessed in terms of scope, duration, and control of access. It makes a difference whether a service provider only has access to a specific system during a maintenance window or possesses extensive, permanent rights.
Contract design also becomes more important as a result. Responsibilities for security updates, incident reporting, access management, and emergency support should be clearly defined. A low maintenance price says little about whether these tasks are adequately covered.
From an economic perspective, purchasing a service is not just about repairs. It also includes a certain level of reliable operational support. If this dimension is overlooked, any apparent savings in the service contract can be offset by increased risks elsewhere.
The question of who the perpetrators are requires more restraint than headlines
The French government suspects Iranian involvement. A group called Shahid Kaveh, allegedly supported by the Revolutionary Guard, has been mentioned in connection with the incidents and has already been linked to other operations against France and French interests. However, French authorities describe the evidence as circumstantial, not conclusive. State involvement is therefore not established.
This uncertainty is crucial for an objective analysis. Technical observations, political assessments, and legally sound attributions are distinct levels. They must not be conflated into a seemingly unambiguous narrative of the perpetrator.
A financial motive remains conceivable. However, no publicly known extortion attempts have been reported to date. The absence of a known demand proves neither a political motive nor does it completely rule out economic interests.
For companies, identifying the perpetrator is relevant, but not the sole starting point for their security measures. Different actors can exploit the same vulnerability. Publicly accessible controls do not become safe simply because the intentions of a potential attacker remain unclear.
The robust operational response therefore focuses on verifiable facts: existing systems, accessible interfaces, known vulnerabilities, and potential impacts. Political analysis can supplement this picture, but it does not replace a technical inventory or effective protective measures.
Sabotage targets trust, not just individual devices
The French cybersecurity agency assesses the incidents as suspected sabotage attempts against industrial control technology. This classification highlights a different logic of damage compared to classic data theft. The goal may be to disrupt operational functions and render physical assets unusable.
For the food retail sector, the trust dimension is particularly sensitive. Customers must be able to rely on the fact that the products offered have been stored properly. If, after an incident, it is unclear what temperatures were actually present, a problem of proof arises in addition to the technical problem.
From an economic perspective, it's not just a matter of whether the refrigeration system functions again after tampering. It's also crucial whether the condition of the stored goods can be reliably assessed. A lack of traceability can complicate the decision regarding release or disposal.
This results in the added value of reliable monitoring data. It can help to narrow down affected time periods and inventories. However, this is contingent on the information itself being sufficiently trustworthy.
A security strategy must therefore consider both the control and monitoring of the process. Focusing solely on preventing equipment failures may overlook the question of how a company can technically justify its decisions in the event of a malfunction and make them comprehensible to stakeholders.
The blood bank demonstrates the value of a second layer of protection
The prevented damage at the French blood bank is an important counterpoint to successful manipulations in the trade. It makes clear that an attack does not necessarily have to lead to the loss of stored products. Further protective mechanisms can exist between an unauthorized intrusion and actual damage.
The monitoring system there prevented damage to the blood supplies. The specific technical and organizational processes that contributed to this cannot be fully determined from the available information. Nevertheless, the fundamental principle is clear: timely detection and effective response can limit the consequences of tampering.
This is crucial for economic evaluation. Security expenditures are not only effective in preventing attacks. They can also reduce the extent of damage if an attack has already occurred.
With medications and blood products, the implications are particularly significant. Refrigeration not only protects the commercial value of these goods; tampering could also jeopardize the availability of medically necessary products. The specific consequences depend on the current stock levels and the situation.
This incident therefore underlines a general principle: the more serious the potential consequences of a temperature deviation, the less the overall safety should depend on a single control system or a single communication channel.
Security begins with a reliable asset register
An effective response requires that a company understands its technical landscape. Without an overview of the control systems in use, it is impossible to reliably determine whether a published vulnerability affects one's own operations.
Such a directory should include more than just manufacturer and location. Economically relevant factors also include the value of the goods under management, available remote access, responsible service providers, software versions used, and the respective support status. Only this combination transforms a device list into a basis for decision-making.
This isn't about creating the most comprehensive documentation possible for its own sake. The information must be able to answer specific questions: Which system would be particularly critical if tampered with? Where does manufacturer support end? Which systems are accessible from the outside? Who is authorized to make changes?
This overview allows us to develop a sequence of actions. A system that is no longer supported and publicly accessible deserves a different level of urgency than a closed-off facility with limited impact and reliable monitoring.
Prioritization should therefore combine technical vulnerability and economic consequences. Focusing solely on the age of the equipment can lead to overlooking significant risks. Conversely, considering only the monetary value might underestimate an easily exploitable interface with access to other systems.
Not every vulnerability can be immediately resolved with an update
The demand for rapid security updates is fundamentally understandable. However, when operating technical systems, it is also necessary to check which version is available, whether it is compatible with the system in use, and how the change will affect ongoing operations.
The situation is particularly difficult with devices that lack manufacturer support. In such cases, a permanently reliable security solution may require replacement. Until then, the question arises as to how access can be restricted and operation additionally monitored.
Such interim solutions should not be confused with a permanent elimination of the root cause. They can buy time and reduce risks, but must be linked to a clear plan for the future. Otherwise, a temporary exception will become a permanent condition.
From an economic perspective, the decision between upgrading, adding extra protection, and replacing the system should not be made in isolation. Relevant factors include the remaining service life, the availability of replacements, potential downtime, and the consequences of a successful attack.
A sensible strategy avoids two extremes: uncontrolled continued operation for cost reasons and blanket immediate replacement without evaluation. Crucial is a well-founded action plan that quickly reduces particularly critical risks and subsequently eliminates structural problems permanently.
Reaction speed is an economic protective factor
For temperature-sensitive goods, time is a crucial factor. Therefore, the extent of the damage depends not only on whether tampering is possible, but also on how quickly it is detected, assessed, and stopped.
An alarm is only useful, however, if it triggers a functioning response. It must be clear who is responsible, who is authorized to authorize technical interventions, and what operational decisions are required in parallel. This includes, for example, checking affected inventory or organizing alternative storage, provided it is available and suitable.
The technical and commercial responses should be coordinated. A service technician can restore the control system, but this doesn't necessarily determine the usability of the goods. Conversely, store management can block goods without being able to assess the cause of the tampering.
Pre-defined procedures reduce such interface problems. Their value becomes apparent not only in major crises, but also when an unusual temperature trend occurs outside of normal working hours.
From an economic perspective, responsiveness is therefore an investment in itself. A company cannot eliminate every potential attack vector. However, it can work to minimize the amount of unused time that elapses between the first recognizable sign and effective countermeasures.
European rules do not solve the problem retroactively
The European Commission and ENISA emphasize the importance of rapid information exchange and coordinated responses. Given the cross-border use of products, this is a logical step. A vulnerability in a widespread control system does not only affect the country where it is first discovered or exploited.
Reporting obligations for actively exploited vulnerabilities and serious security incidents already exist. Further requirements for security by design and security support throughout the product lifecycle will come into effect under the Cyber Resilience Act on December 11, 2027.
This distinction is important. It would be just as inaccurate to present all requirements as already fully effective as it would be to give the impression that there is no framework for action whatsoever until the end of 2027.
Furthermore, for economic evaluation, it is important to note that new product requirements do not automatically eliminate existing risks in already installed systems. Operators must continue to assess their existing systems themselves and develop viable solutions with manufacturers and service providers.
Companies subject to NIS 2 should use these incidents as an opportunity to review their networked control systems. However, whether a specific business is covered and what obligations apply in detail requires a separate assessment. A blanket equating of all supermarkets with the same regulatory status would be inappropriate.
Manufacturers must consider digital usability in the long term
These incidents also raise a product-economic question: How long can a networked control system actually be used effectively? The answer cannot depend solely on physical durability. For digitally accessible devices, the ability to perform safety maintenance is part of the product's practical value.
This presents manufacturers with the challenge of making support periods, update options, and the end of support transparent. Operators need this information to plan investments. Uncertainty doesn't eliminate costs; it often only postpones them.
The design of interfaces is also economically relevant. Functions that allow extensive interventions must be particularly carefully secured and clearly documented. Undocumented functions and insecure command processing, on the other hand, make reliable assessment by operators and maintenance companies more difficult.
For buyers, cybersecurity should therefore become part of the technical product selection process. In addition to performance, energy consumption, and purchase price, questions regarding security support, access control, and backup strategies should be included in the evaluation.
This also changes the competitive landscape. A low initial price can become less attractive if high insurance or replacement costs arise over the system's lifespan. Conversely, a well-managed and transparent system can offer added economic value, even if its initial purchase price is higher.
A reliable damage assessment requires better data
The known incidents are sufficient to take the risk seriously. They are not sufficient to precisely quantify its full economic dimension. Reliable data on the number and extent of successful manipulations, as well as the respective consequential costs, are lacking.
A meaningful data foundation would need to distinguish between several levels: publicly accessible systems, actually vulnerable systems, proven access attempts, successful changes to settings, and the resulting damage. These categories must not be conflated.
Equally important is the distinction between prevented and actual damage. The blood bank incident demonstrates that an attack can be successfully detected before stored products are damaged. Such events are significant for security assessments but must not be recorded as merchandise loss.
Therefore, consistent internal data collection is worthwhile for companies. Even minor incidents, unusual access attempts, and effective countermeasures can provide clues as to where investments are truly beneficial.
A data-driven perspective here doesn't mean replacing missing figures with seemingly precise estimates. It means revealing the limits of knowledge and justifying decisions transparently with the available information. Especially with new attack patterns, this discipline is more valuable than a spectacular but unverifiable total damage figure.
The crucial investment protects the business, not just the technology
The manipulation of European refrigeration systems is neither merely a problem specific to individual manufacturers nor proof of an imminent supply crisis. It reveals a concrete economic vulnerability: digital access can directly jeopardize the value of physical inventory.
The rational perspective therefore lies between a fixation on technical details and sweeping threat rhetoric. Companies must understand which control systems they operate, how these are accessible, who supports them, and what the consequences of a loss of control would be. From this, prioritized measures can be derived without indiscriminately declaring every facility a high-risk system.
Particularly critical are situations where known vulnerabilities, public accessibility, and a lack of manufacturer support coincide. Equally important are limited service provider access, reliable monitoring, and proven response procedures. These elements complement each other: prevention reduces the potential for attack, detection shortens the period of undetected disruption, and prepared procedures limit the remaining damage.
In the long term, a more realistic understanding of economic efficiency is needed. A cooling system is not inexpensive simply because it cools reliably and requires little maintenance. It must also perform its function effectively under conditions of digital networking.
The strategic lesson is therefore: Anyone who makes physical processes digitally controllable must treat their digital security as an integral part of their operations. Otherwise, saved maintenance time becomes an uncontrolled operational risk – and inconspicuous remote access becomes direct access to the value of goods, delivery capability, and trust.
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