CyberGuard dictionary / Business Cybersecurity
Third Party Risk
Third-party risk is the possibility that an external organization or service affects a business's security, operations, compliance, or customers.
In simple terms
A partner may handle data, connect to systems, or provide a service the business cannot easily replace.
Technical explanation
Assessment considers access, data handling, subcontractors, resilience, incident notification, and contract terms. Risk should be revisited when scope or service changes, not only at initial onboarding.
A third party can introduce data, access, availability, or compliance risk even when the business does not operate the service itself. Ownership and contract terms should support monitoring and response.
Examples in practice
A payroll provider processes employee records, so the customer reviews its access controls and breach notification process.
The payroll processor reports a security incident. The customer follows its escalation path, determines whether employee data is involved, and checks the vendor's recovery status.
Why it matters
External dependency does not transfer away the business impact when the provider has a failure.
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Sources and further reading
- www.cisa.govhttps://www.cisa.gov/resources-tools/resources/assisting-small-and-medium-sized-businesses-assess-vendors-and-suppliers-fact-sheet↗
- www.nist.govhttps://www.nist.gov/publications/nist-cybersecurity-framework-csf-20↗
Published 2026-10-15 · Last updated 2026-10-15 · CyberGuard editorial content. Source links provide context; they do not imply endorsement.