A.8.27·high·Component: Technological controlsWhat this control requires
Principles for engineering secure systems shall be established, documented, maintained and applied to any information system development activities.
In plain English
Principles for engineering secure systems shall be established, documented, maintained and applied to any information system development activities. In practice, this means you can prove you policy information-level controls on a defined cadence.
Why it matters
ISO 27001 certification depends on showing each Annex A control is either implemented or explicitly justified for exclusion in the Statement of Applicability (SoA). Certification bodies sample controls during surveillance audits, and a missing SoA entry — or implementation that doesn't match the SoA wording — is a finding.
This control is rated high. Auditors expect a named owner, a remediation SLA, and a tooling artefact that evidences continuous operation.
What an auditor looks for
An ISO 27001 lead auditor looks for: (1) an SoA entry covering the control with justification, (2) a documented procedure or policy implementing it, (3) records that prove the procedure runs (logs, tickets, training records) and (4) management-review evidence that effectiveness is monitored.
Within Technological controls, the assessor will trace your implementation back to the catalogue reference (Annex A A.8.27) and look for objective evidence on the latest two assessment cycles.
How to implement
Policy Management
Docs. Keep each policy in version-controlled Markdown alongside the code that implements it; ship a signed PDF snapshot at each annual review and link the SHA into the SoA.
Secure Development
Pipeline. Require code review, SAST (Semgrep / Snyk Code), SCA (Dependabot / Renovate), secret-scanning and IaC scanning in the merge pipeline.
Branch protection. Protected branches enforce reviews, signed commits and passing CI before merge; document the protection rules as the control evidence.
Operational checklist
- Policy. Document the trigger, the owner and the cadence.
- Information. Document the trigger, the owner and the cadence.
- Management. Document the trigger, the owner and the cadence.
- Secure. Document the trigger, the owner and the cadence.
- Scope: information, management, development.
Evidence to collect
- Policy Document. A signed and version-controlled policy / standard / procedure document.
- Ticketing Workflow.
ticketing_workflowevidence
Architecture standards and review tickets document secure engineering principles for new systems.
Common pitfalls
- Policies that no engineer has read; the version in Confluence drifts from the version that's actually being enforced.
- CI security checks set to warn-only; the merge button is faster than the security feedback.
How it maps to other frameworks
Computed from shared tags, control component and key-operation subjects — handy when you are reconciling controls across an audit.
- SOC 2 (2017 TSC) CC1.2 — Board Independence and Oversight
- NIST SP 800-171 Rev. 3 3.13.2 — Recategorized as NCO
- BSI C5:2020 DEV-01 — Policies for the development/procurement of information systems
- NIST SP 800-53 Rev. 5 CM-9(1) — Assignment Of Responsibility
- HIPAA (45 CFR Part 164) 164.308(a)(5)(i) — Security Awareness and Training
Related controls in ISO/IEC 27001:2022
- Annex A A.8.31 — Separation of development, test and production environments
- Annex A A.8.14 — Redundancy of information processing facilities
- Annex A A.8.8 — Management of technical vulnerabilities
- Annex A A.8.17 — Clock synchronization
- Annex A A.8.32 — Change management
- Annex A A.8.33 — Test information
References
- ISO/IEC JTC 1/SC 27 — ISO/IEC 27001:2022
- Catalogue identifier:
Annex A A.8.27
Topics: governance riskpolicy managementsecure development