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SOC 247
ITSP.10.17198
ISO 42001soon
ISO 27001soon

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98 controls

03.16.01Security engineering principlesITSP.10.171System and services acquisition

Official Requirement

Apply the following systems security engineering principles to the development or modification of the system and system components: [Assignment: organization-defined systems security engineering principles].

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

In Plain English

Security must be built into your systems from the start -- not bolted on afterward. Apply secure-by-design principles throughout the system lifecycle: during specification, design, development, implementation, and any modifications. This includes threat modeling, secure coding, defense in depth, and least privilege in architecture.

Cross-framework mappings:ISO 42001 · coming soonISO 27001 · coming soon
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Updated: Mar 22, 2026Reviewed: Mar 22, 2026v1.0.0
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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

Secure engineering principles application

Implementation steps

  1. Document organizational security engineering principles to be applied during all phases of the system lifecycle
  2. Conduct threat modeling for new system designs and significant changes to identify and address security risks early
  3. Apply secure coding practices and perform security-focused code reviews before deployment
  4. Include security engineering validation as a gate in the change management and deployment process

Tools / systems

Evidence artifacts

Evidence frequency: Per-project threat modeling and design review; continuous SAST in CI/CD; annual principles review