Several leading cybersecurity agencies, including the Nationaal Cyber Security Center (NCSC) en ENISA (EU agency) state that most hacks can be prevented through good cyber hygiene. But what exactly does that mean? And what does that mean for working with suppliers in my supply chain?
The difference between internal and external cyber hygiene
An important difference, however, when implementing cyber hygiene measures for your internal organization is that supply chain hygiene involves external suppliers. With suppliers, you have no direct control, you cannot enforce policies, and you must rely on what you can observe.
Cyber hygiene in the supply chain is the set of basic measures that prevent external parties from unnecessarily introducing risk into your organization. To still pursue a resilient supply chain, the focus therefore shifts from controlling to observing and steering.
The 6 basic principles for a resilient supply chain
We apply 6 basic principles that together lead to better cyber hygiene of your supply chain.
1. Complete chain visibility
You have a current and complete view of your supply chain, including direct suppliers, digital connections, and shadow suppliers. Not only based on contracts or assumptions, but on actual dependencies. You know which parties play a role in which processes and what your organization is technically and operationally dependent on.
2. Current insight into suppliers’ cyber hygiene
You know suppliers’ cyber hygiene based on continuous and daily observable behavior. Not through periodic questionnaires or certificates, but by looking at external exposure, vulnerabilities, and known incidents. This insight is dynamic and changes with reality.
3. Direct alerts for incidents and relevant events
A clean supply chain means you don’t hear after the fact that something was wrong. You are directly informed when suppliers are affected by incidents, data breaches, ransomware, disruptions, or other relevant events. Not every incident is immediately a crisis, but every incident provides the context you need to respond quickly and proportionally.
4. Understanding of impact and incident propagation
You understand how an incident at one party can affect other parts of the chain and your own organization. This means you know which processes, data, and departments can be affected and where trusted connections can accelerate the spread. Incidents are assessed in context, not in isolation.
5. Clear ownership and governance
In a clean supply chain, it is always clear who is responsible for follow-up, even when multiple departments or organizational units are affected. IT, security, procurement, legal, and business each have a role, but ownership is explicitly assigned. This prevents paralysis, post-incident discussions, and ad-hoc decision-making during incidents.
6. Risk-driven and continuous management
Risks are prioritized based on impact, dependency, and current threat. Cyber hygiene in the chain is not an annual exercise or compliance activity, but a continuous process. Changes in suppliers, threats, or digital connections automatically lead to reassessment of risks and measures.
Conclusion
A resilient supply chain begins with complete insight: knowing which suppliers, digital connections, and shadow parties are part of your chain and which processes and data depend on them. This insight goes beyond contracts and is updated daily based on external exposure, vulnerabilities, and incidents, ensuring your risk profile is always current.
Additionally, it revolves around timely detection and clear governance. You are immediately informed about incidents and relevant events, understand the impact on your organization and chain partners, and ownership is explicitly assigned. Risks are continuously managed by priority, making cyber hygiene in the supply chain not a one-time exercise, but a structural management process.
