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ITSP.10.17198
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03.17.03Supply chain requirements and processesITSP.10.171Supply chain risk management

Official Requirement

A. Establish a process for identifying and addressing weaknesses or deficiencies in the supply chain elements and processes. B. Enforce the following security requirements to protect against supply chain risks to the system, system components, or system services and to limit the harm or consequences from supply chain-related events: [Assignment: organization-defined security requirements].

Source: Canadian Centre for Cyber Security ITSP.10.171 (2025), adapted from NIST SP 800-171 Rev. 3

In Plain English

You need formal processes to find and fix weaknesses in your supply chain. This includes security requirements that supply chain partners must meet and procedures to limit damage if a supply chain incident occurs. Think of it as applying the same rigor to your supply chain that you apply to your own systems.

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The Trust Services Criteria referenced in this tool are published by the American Institute of Certified Public Accountants (AICPA) and incorporate principles from the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Criteria descriptions are reproduced for reference purposes. All implementation guidance, evidence recommendations, and control language are original work by Truvo Cyber. ISO 27001 and ISO 42001 are standards published by the International Organization for Standardization (ISO). Framework and standard names are the property of their respective owners. This tool is not affiliated with, endorsed by, or certified by AICPA, COSO, or ISO.

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On-premises implementation and evidence

Supply chain weakness identification and security requirements

Implementation steps

  1. Document a process for regularly identifying and assessing weaknesses in supply chain partners, components, and processes
  2. Define and enforce security requirements for all supply chain participants, including assessment, compliance, and incident notification obligations
  3. Track identified supply chain deficiencies and remediate through corrective action plans with defined timelines
  4. Implement contingency plans for supply chain disruptions, including approved alternative sources and rapid replacement capabilities

Tools / systems

Evidence artifacts

Evidence frequency: Annual supply chain assessments; per-event corrective actions and contingency activation