NIST ID.SC-2: Supplier and Third-Party Risk Assessment
Your supply chain is only as secure as your weakest vendor. ID.SC-2 requires you to systematically identify, prioritize, and assess suppliers and third-party partners for cyber risk before they touch your systems. Without a structured approach, you're flying blind—and regulators know it.
What this means
This control mandates that organizations establish and execute a documented cyber supply chain risk assessment process. You must identify all suppliers and third-party providers who have access to or influence over your information systems and services. These vendors must then be prioritized based on criticality and risk exposure, followed by a formal assessment of their cyber posture, security controls, and compliance status. The goal is reducing the likelihood that a compromised vendor becomes your entry point.
How to comply
- 1.Create a comprehensive inventory of all suppliers and third parties with system access or integration points
- 2.Define risk prioritization criteria (data sensitivity, system criticality, access level)
- 3.Rank suppliers into risk tiers based on their potential impact to your organization
- 4.Develop a cyber risk assessment questionnaire or framework (CAIQ, security assessments, certifications)
- 5.Document assessment results, identify gaps, and assign remediation actions
- 6.Establish a review and update schedule (typically annual or when vendors change)
- 7.Require contractual obligations that include security controls and compliance standards
Evidence auditors look for
- Documented supplier inventory with risk ratings and assessment dates
- Completed security assessments or questionnaires for high-risk vendors
- Risk prioritization matrix or scoring methodology
- Vendor security certifications (SOC 2, ISO 27001, FedRAMP)
- Third-party assessment reports and audit findings
- Vendor security agreement templates with control requirements
- Remediation tracking logs for identified vendor gaps
- Annual supplier risk review meeting minutes and updated risk classifications
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
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