Treat supply chain risk as part of system risk by identifying dependencies, setting requirements for suppliers, and monitoring ongoing exposure.
Supply chain risk management becomes critical when systems rely on vendors for software, cloud services, equipment, or operational support. In a NIST-oriented approach, this means identifying where suppliers affect confidentiality, integrity, and availability, and defining requirements that reflect the organization's risk tolerance.
Effective programs also maintain evidence: supplier security expectations, onboarding and review processes, incident communication paths, and periodic reassessment as dependencies evolve. This reduces blind spots where third-party changes introduce new vulnerabilities or operational risks.
Organizations often map suppliers but fail to operationalize it; the missing piece is measurable requirements and an ongoing review cadence tied to critical dependencies.
“Your security boundary includes your dependencies.”
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L’ISO/IEC 27005 définit un cadre de gestion des risques, tandis qu’EBIOS ou NIST proposent des méthodes d’analyse détaillées. ISO 27005 permet d’intégrer plusieurs méthodes dans un cycle de gestion standardisé.
ISO/IEC 27005 defines a risk management framework rather than a single assessment method, while EBIOS, NIST, and similar approaches provide specific analysis techniques. ISO 27005 allows organizations to select and justify methods within a standardized lifecycle.
ISO 31000 supports decision-making by providing a structured way to understand uncertainty, prioritize risks, and select treatment options based on defined criteria.
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