Your Biggest Third-Party Risk In 2027 Is Already In Your Supply Chain

A third party does not have to be compromised for your organization to feel the impact of a supply chain failure. In 2027, risk leaders will need to understand how deeply their organizations depend on interconnected suppliers, technology providers, logistics partners and fourth parties. When one critical dependency fails, disruption quickly spreads across customers, operations and markets. The question is no longer simply “How risky is this vendor?” but “What happens to our business if this dependency fails?”

Recent incidents show why this shift matters. In July 2024, a faulty update from cybersecurity provider CrowdStrike caused widespread Windows outages, disrupting airlines, banks, retailers, healthcare providers and other organizations globally. While not a cyberattack, the incident demonstrated how a failure at one technology supplier can affect thousands of businesses simultaneously. Organizations that depended on CrowdStrike’s software had to manage operational disruption even though their own systems had not been directly compromised.

The same pattern appeared in aviation in 2025. A cyberattack on Collins Aerospace’s MUSE check-in and boarding system disrupted operations at London Heathrow, Brussels and Berlin airports, which had to revert to manual processes, causing delays and cancellations. The incident illustrates concentration risk, another dimension of third-party risk. One supplier and one technology platform can become a common failure point for multiple organizations.

The problem has continued into 2026. Texas Parks and Wildlife Department disclosed that an unauthorized actor may have obtained personal information belonging to more than three million customers through its third-party licensing system vendor. This chain of incidents demonstrates how organizations can inherit material risk through services that sit outside their own technology environments.

Third-party risk management (TPRM) needs to look beyond the direct supplier

In practice, TPRM programmes focus heavily on assessing individual vendors on their cybersecurity controls, financial health, compliance and resilience. These assessments remain essential, but they do not necessarily reveal how a supplier connects to the wider ecosystem. A critical vendor may depend on a cloud provider, another technology platform or a fourth party. Multiple suppliers may also rely on the same underlying infrastructure. This creates concentration risk that can remain invisible until disruption occurs.

Black Kite's 2026 Third-Party Breach Report identified 136 verified third-party breach events in 2025, involving 719 publicly named victim organizations and approximately 26,000 additional affected firms disclosed only in aggregate. The report also found an average of 5.28 downstream victims per third-party breach; the highest level recorded in its annual analysis.

For 2027 and beyond, risk leaders should approach TPRM differently by prioritizing:

1. Identification of third parties that support critical business services, and the mapping of critical dependencies behind them.
2. Assessment of concentration risk, by determining where multiple processes or suppliers rely on the same provider, technology or geography.
3. Stress-testing and examining critical failure scenarios to assess the operational impact if a critical supplier becomes unavailable, rather than relying solely on questionnaire responses.

An effective TPRM programme shows a clear understanding of where the organization is exposed through its interconnected supply chain and how those exposures can be mitigated. As supply chains become more interconnected and threats continue to multiply, organizations that fail to evolve their TPRM programmes risk only discovering their most critical dependency at the point when it fails.

To learn more about TPRM best practices, explore our Third-Party Risk Management module, and to find out about the technology that can help organizations bolster their TPRM programmes, watch out for the upcoming Green Quadrant on TPRM early next year.