Vendors, Service Providers, and the Hidden Cyber Risk in Food Production
Your resilience is shaped by the practices of the organizations you depend on


Modern food production depends on a wide network of external partners. Equipment manufacturers install and support processing lines. System integrators connect controls and software. Refrigeration specialists monitor cold storage. Laboratory systems exchange quality data. Maintenance contractors access equipment remotely. Cloud providers host dashboards, historians, analytics platforms, and reporting tools.
These relationships are essential. Food producers cannot operate without them. But every vendor and service provider also introduces risk.
In many facilities, external support has become so routine that it fades into the background. A supplier dials in to troubleshoot a packaging issue. A contractor updates a PLC program. A software vendor maintains a server that supports production reporting. A machine builder leaves behind a remote connection so support can be provided quickly when needed. Each of these actions may be legitimate. Each may also create a pathway through which disruption, error, or compromise can enter the facility.
This is one of the defining realities of modern operational technology. Food producers may work hard to secure their own environments, but their resilience is also shaped by the practices of the organizations they depend on.
The risk is not only malicious
When people think about vendor risk, they often picture a cyberattack that begins through a trusted third party. That is certainly possible. A compromised service provider can become an entry point into multiple customer environments. Stolen credentials, infected laptops, poorly secured remote access tools, and vulnerable update mechanisms have all played roles in real-world incidents across industries.
But in food production, the risk is broader than deliberate attack. A vendor can also create risk through ordinary mistakes. A technician may connect to the wrong system. A change may be made without understanding the operational impact. Default passwords may be left in place after commissioning. A remote access account intended for temporary use may remain active indefinitely. A maintenance laptop used across multiple facilities may transfer malware from one site to another without anyone realizing it.
These are not always acts of negligence. Often they are simply the byproduct of speed, complexity, and assumptions. The challenge for food producers is that the consequences can still be serious. Production may stop. Recipes or setpoints may be altered. Alarms may be missed. Traceability records may be disrupted. Temperature control may be lost. A quality issue may emerge that forces product holds, waste, or recall decisions. A cybersecurity issue in this environment quickly becomes an operational issue.
Trust is not a control
Food producers often work with long-standing vendors. Some relationships have existed for years or decades. The vendor knows the process, understands the equipment, and has helped keep operations running. That familiarity creates confidence, and rightly so.
But trust alone is not a control. A trusted vendor can still have weak password practices. A respected service provider can still use shared accounts. A highly capable technician can still make a change that introduces unintended consequences. A well-known supplier can still be affected by ransomware, software vulnerabilities, or poor internal security.
The goal is not to treat vendors as adversaries. The goal is to recognize that trusted access must still be governed. In food production, where uptime, quality, and safety all matter, unmanaged vendor access creates a form of uncertainty that the business cannot afford.
Why vendor risk is especially important in food facilities
Food and beverage operations are highly interconnected. A vendor issue may begin in one part of the environment but affect outcomes elsewhere.
A packaging line integrator may connect into a control system that interacts with upstream production. A refrigeration contractor may access systems that protect product integrity across storage and distribution. A laboratory interface may support release decisions or compliance records. A building systems provider may control utilities, environmental conditions, or access systems that support operations.
In this setting, the question is not simply whether a vendor has access. The more important question is what consequences could follow if that access is misused, compromised, or poorly controlled.
For a food producer, those consequences may include:
- Loss of production
- Loss of temperature or environmental control
- Product quality deviation
- Failure of monitoring, alarming, or reporting
- Delayed or incomplete traceability
- Regulatory scrutiny
- Brand damage and customer distrust
This is why vendor risk must be viewed through an operational lens. It is not just a procurement issue. It is part of plant resilience.
Managing vendor risk starts before access is granted
The most effective way to manage vendor and service provider risk is to address it before the relationship becomes operational. That starts with understanding what the vendor will do, what systems they need to access, how that access will occur, and what the consequences would be if something goes wrong.
Not every vendor should be treated the same. A company delivering office supplies does not carry the same operational risk as a controls integrator with remote access to a production line. A refrigeration specialist supporting cold storage does not present the same exposure as a software provider hosting non-critical analytics.
Risk should be tied to consequence. Where vendor activity can affect production, quality, safety, or compliance, stronger controls are justified. This includes clearer requirements for authentication, remote access, change management, logging, approval, and incident notification.
Practical controls that make a difference
Managing vendor risk does not require eliminating outside support. It requires making access intentional, visible, and controlled.
One of the most important steps is to limit remote access to approved methods. Informal tools, unmanaged communications links, always-on connections, and undocumented pathways create unnecessary exposure. Remote connections should be known, secured, and able to be disabled when not in use.
Access should also be time-bound whenever possible. A vendor who needs access for a support task should not retain permanent connectivity by default. Temporary access reduces the window of exposure and reinforces that connectivity is granted for a purpose, not assumed indefinitely.
Shared credentials should be avoided. If multiple people use the same account, accountability is lost. Individual accounts, tied to named users, support better oversight and make investigations easier if something goes wrong.
Approval and supervision also matter. In higher-risk situations, vendor activity should require internal authorization and, where appropriate, active observation. The four-eyes principle can be valuable here. One person performs the work, while another reviews or oversees it. This is not about mistrust. It is about reducing the chance that a single mistake, or a single compromised action, goes unnoticed.
Change management is equally important. Vendors should not make operational changes without a clear process, a defined scope, and documentation. Even a well-intentioned change can have downstream effects on quality, uptime, or process stability.
Another practical control is to manage vendor tools, especially laptops and portable media. A supplier’s laptop may move from site to site and from customer to customer. That makes it a potential carrier of malware. Producers should consider requirements for malware protection, patching, scanning, and restrictions on removable media when introducing those tools into the plant environment.
Contracts and conversations both matter
Vendor risk management is not only technical. It should also be reflected in agreements and expectations. Contracts, service agreements, and onboarding processes should address cybersecurity responsibilities in plain language. This may include requirements for background checks, access controls, secure support processes, incident notification, credential protection, and subcontractor expectations.
Documents alone are not enough. The strongest relationships are the ones in which these issues are discussed openly. Food producers and service providers should share an understanding of what matters most: safe operations, reliable production, product integrity, and rapid recovery when something goes wrong.
A vendor who understands the operational consequences of a mistake is better positioned to support the site responsibly.
Resilience means planning for failure as well as prevention
Even strong controls cannot guarantee that an issue will never occur. That is why vendor risk management must also include mitigation controls.
If a vendor connection is lost, can the site continue safely? If a remote support tool must be disabled, is there an alternate process? If a service provider introduces a problem, can changes be rolled back? Are backups available for key systems? Can manual procedures sustain essential operations while the issue is addressed?
These questions matter because resilience in food production is not defined only by how well threats are blocked. It is also defined by how well consequences are contained.
A more mature view of vendor risk
Vendors and service providers are part of the operating environment of a modern food facility. They bring the expertise, speed, and capabilities producers need. But they also extend the boundaries of risk.
The answer is not to cut off support or make collaboration difficult. It is to govern these relationships in a way that reflects their real operational impact.
That means knowing who has access, why they have it, when they use it, what they can affect, and how their activity is controlled. It means applying stronger oversight where the consequences are greater. It means treating third-party access not as a convenience, but as a managed part of operational resilience.
In food production, cybersecurity is rarely just about data. It is about keeping processes stable, product safe, records trustworthy, and operations recoverable.
Vendor and service provider risk belongs squarely in that conversation.
About the leader

Steve Mustard is an industrial automation consultant with more than 35 years of engineering experience across multiple sectors. He is a licensed Professional Engineer (PE) in Texas and Kansas, a Liveryman of the Worshipful Company of Engineers, an ISA Certified Automation Professional® (CAP®), a UK registered Chartered Engineer (CEng), a European registered Engineer (Eur Ing), a GIAC Global Industrial Cyber Security Professional (GICSP), and a Certified Mission Critical Professional (CMCP). He was the 2021 President of the International Society of Automation (ISA) and is a Life Fellow of the Society. He is a Fellow of the Institution of Engineering and Technology, and a member of the Water Environment Federation (WEF) Safety and Security Committee. Mustard writes and presents on a wide array of technical topics and is the author of “Industrial Cybersecurity, Case Studies and Best Practices” and ‘Mission Critical Operations Primer”, both published by ISA and “A Guide to Cybersecurity for Water and Wastewater Utilities”, published by WEF. He has also contributed to other technical books, including “Project Management: A Technician’s Guide”, published by ISA, WEF’s “Design of Water Resource Recovery Facilities, Manual of Practice No.8, Sixth Edition” and “The Digital Twin” book., published by Springer Nature. Mustard’s previous and current client list includes: the UK Ministry of Defence; NATO; major utilities, such as Anglian Water Services and Sydney Water Corporation; major oil and gas companies, such as bp, BG Group and Shell; Fortune 500 companies, such as Quintiles Laboratories; and other leading organizations.