In this ultimate how to implement guide to ISO 27001 Annex A 8.28 Secure Coding, you will learn directly from an ISO 27001 Lead Auditor:
- The requirement of the control
- The required implementation steps
- The minimum requirement
I am Stuart Barker, the ISO 27001 Lead Auditor and author of the Ultimate ISO 27001 Toolkit.
Using over 30 years of industry experience across hundreds of audits, I’m giving you the exact templates, walkthroughs, and practical examples you need to achieve ISO 27001 certification.
Table of contents
- ISO 27001 Secure Coding Implementation Checklist
- 1. Establish Mandated Coding Standards
- 2. Implement Pre-Commit Security Hooks
- 3. Enforce Input Validation Libraries
- 4. Automate Dependency Scanning (SCA)
- 5. Sanitize Output Data
- 6. Secure Error Handling
- 7. Mandate Peer Code Reviews
- 8. Encrypt Data at the Application Level
- 9. Disable Insecure Framework Features
- 10. Verify Through Static Analysis (SAST)
- ISO 27001 Annex A 8.28 SaaS / GRC Platform Implementation Failure Checklist
Implementing ISO 27001 Annex A 8.28 is the systematic application of secure coding principles to reduce software vulnerabilities and defend against malicious attacks. This control requires establishing mandated coding standards and automating security checks within the development pipeline. The primary business benefit is ensuring software integrity and preventing costly security breaches.
ISO 27001 Secure Coding Implementation Checklist
Use this implementation checklist to achieve compliance with ISO 27001 Annex A 8.28. This control mandates the application of secure coding principles to software development to reduce vulnerabilities and defend against attacks.
1. Establish Mandated Coding Standards
Control Requirement: A defined set of secure coding principles must be applied to all development projects.
Required Implementation Step: Formally adopt the OWASP Top 10 or CWE/SANS Top 25 as your baseline standard. Configure your IDE linters (e.g., ESLint, SonarLint) to enforce these rules locally on developer machines before code is even committed.
Minimum Requirement: Developers cannot push code that violates the defined linter configuration file.
2. Implement Pre-Commit Security Hooks
Control Requirement: Secure coding rules must be enforced technically, not just procedurally.
Required Implementation Step: Install pre-commit hooks (using tools like Husky or pre-commit) that scan for hardcoded secrets, API keys, and basic syntax vulnerabilities. This creates a hard gate that prevents insecure code from entering the version control system.
Minimum Requirement: A commit containing “API_KEY=” is rejected by the local git client.
3. Enforce Input Validation Libraries
Control Requirement: All external input must be validated to prevent injection attacks.
Required Implementation Step: Standardise on a strict input validation library for your framework (e.g., Joi for Node.js, Hibernate Validator for Java). Ban the use of raw input processing and require positive validation (allow-listing) for all form data and API parameters.
Minimum Requirement: No API endpoint accepts raw input without passing through a validation schema.
