MY WORK / SUPPLY CHAIN RISK / THIRD-PARTY RISK
Supply Chain Risk: 3 Steps to Improve Vendor Visibility and Cyber Due Diligence
Supply chain risk is one of the easiest cyber security risks to underestimate because it often sits outside the organisation, across vendors, suppliers, SaaS platforms, consultants, service providers, and outsourced teams. If you do not know who has access to your systems, data, customers, or critical services, it becomes much harder to manage third-party risk properly.
Quick answer: Supply chain risk management starts with clarity. You need visibility over your vendors, a practical way to tier suppliers based on risk, and a repeatable due diligence and monitoring process so cyber supply chain risk does not quietly expand over time.
Oct 23
Written By Karimah A
In this video, I share three practical steps to gain clarity on your supply chain so you can strengthen your cyber security posture and manage third-party risk more effectively. Supply chain risk is rarely limited to what happens inside the organisation. It also depends on the vendors, suppliers, software platforms, and service providers your business relies on every day.
The aim is not to make supply chain security complicated. The aim is to create enough visibility to understand who your third parties are, what they do, what data or systems they access, how critical they are, and how often they should be reviewed.
Key takeaway: Supply chain security is not only about control — it is about clarity. The more visibility you have over suppliers, vendors, and service providers, the stronger your cyber security due diligence and third-party risk management become.
Watch the video
This video is for organisations that want a more structured and realistic approach to supply chain risk, third-party risk management, and cyber security due diligence. It is especially useful if vendor visibility is poor, ownership is unclear, or risk decisions are being made without enough information.
Why supply chain risk matters in cyber security
Supply chain risk is a cyber security issue because many organisations rely on third parties to process data, provide systems, support operations, or deliver critical services. If those vendors are not visible, assessed, and monitored, risk can build outside the organisation without clear ownership.
Cyber supply chain risk is not only about large suppliers or complex outsourcing arrangements. It can also come from SaaS tools, consultants, payment providers, marketing platforms, cloud services, outsourced support teams, and any third party with access to business systems or sensitive data.
Data exposure
Suppliers may process, store, transmit, or access sensitive business, customer, employee, or operational data.
Operational dependency
A supplier outage, breach, or service failure can affect business continuity, customer experience, or revenue.
Access risk
Third parties may hold accounts, API access, remote access, administrator access, or integration permissions.
Contractual and compliance risk
Weak supplier oversight can create gaps around incident reporting, data protection, audit evidence, and contractual obligations.
What you’ll learn
1. Understand everything you own
How to build a clearer view of vendors, review invoices, check systems like your CMDB, and create visibility before trying to apply controls.
2. Tier your vendors
How to assess suppliers based on the data they access, the systems they support, their business criticality, and the level of cyber supply chain risk they introduce.
3. Monitor continuously
How to create reassessment reminders, maintain breach contacts, clarify incident reporting expectations, and strengthen ongoing third-party risk management.
4. Improve resilience over time
Why stronger supply chain clarity helps reduce surprises, improve response readiness, support due diligence, and strengthen cyber security governance.
What cyber security due diligence should cover
Cyber security due diligence gives organisations a practical way to understand the risk introduced by vendors, suppliers, and service providers. It should not be a one-off form that gets filed away. It should help the business decide how much risk a third party introduces and what level of monitoring, review, or contractual control is needed.
- Supplier ownership: who owns the relationship internally and who is responsible for review.
- Data access: what information the supplier can access, process, store, or transmit.
- System access: whether the supplier has access to applications, cloud platforms, integrations, APIs, or admin portals.
- Business criticality: whether the supplier supports an important process, service, revenue stream, or customer-facing activity.
- Security controls: whether the supplier can evidence basic controls such as access management, incident response, backup, and vulnerability management.
- Incident reporting: who must be contacted, how quickly the supplier must notify you, and what information they must provide.
- Review frequency: how often the supplier should be reassessed based on risk tier and business criticality.
Common supply chain risk challenges
- Manual tracking: supplier data is spread across spreadsheets, emails, invoices, procurement records, and application owners.
- Lack of breach visibility: teams may not know quickly when a supplier has suffered an incident.
- Shadow IT: teams may use tools or suppliers without formal approval, review, or ownership.
- Unclear ownership: no single person is accountable for keeping supplier records accurate.
- Inconsistent due diligence: high-risk and low-risk suppliers may be reviewed in the same way, wasting time and missing critical issues.
- Weak reassessment rhythm: suppliers are assessed at onboarding but not reviewed as access, services, or business dependency changes.
These challenges are common because supply chain security depends on coordination across multiple teams, systems, and decisions. Without a clear inventory and ownership model, suppliers can become invisible until something goes wrong.
Clarity does not remove all third-party risk, but it gives the organisation a stronger basis for managing it. Better visibility makes vendor tiering more accurate, reassessments more meaningful, and incident response more realistic.
Who this video is for
- Cyber security and risk leaders who need better visibility over vendors and suppliers.
- GRC and compliance professionals improving third-party risk management.
- Procurement and vendor management teams responsible for supplier oversight.
- Business owners handling sensitive data, outsourced services, or critical suppliers.
- Startup and scaleup teams preparing for client due diligence, audits, or enterprise deals.
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Frequently asked questions
What is supply chain risk in cyber security?
Supply chain risk in cyber security is the risk introduced by vendors, suppliers, service providers, software platforms, consultants, and other third parties that can access systems, data, operations, or customers.
What is cyber supply chain risk?
Cyber supply chain risk is the risk that a third party, supplier, software provider, or external service could expose the organisation to security, operational, data protection, or incident response issues.
How does due diligence reduce supply chain risk?
Due diligence helps organisations understand what a supplier does, what data they access, how critical they are, what controls they have in place, and whether they need ongoing monitoring.
What should be included in third-party cyber security due diligence?
Third-party cyber security due diligence should include supplier ownership, data access, system access, service criticality, security controls, incident reporting expectations, contractual obligations, and reassessment frequency.
Why is vendor visibility important for third-party risk management?
Vendor visibility helps organisations understand who they rely on, what each supplier can access, which services are critical, and which third parties need stronger controls, monitoring, or review.
How often should suppliers be reassessed?
Suppliers should be reassessed based on risk. Higher-risk suppliers, critical service providers, and vendors with sensitive data or system access should be reviewed more frequently than low-risk suppliers.
Need help improving third-party risk management?
If your organisation needs better supplier visibility, cyber security due diligence, vendor tiering, or practical third-party risk governance, explore more of my work or book a consultation.