A.8.31 Separation of Development, Test, and Production Environments would include:
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Network Architecture Diagram: A clear network architecture diagram that visually represents the separation of development, test, and production environments. This should show the logical and physical separation of these environments to prevent unauthorized access and data leakage.
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Access Controls: Documentation of access controls implemented to restrict access to development, test, and production environments. This should include user access lists, permissions, and role-based access controls.
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User Access Logs: Records of user access to each environment, including login/logout timestamps and activities performed. This helps track who accessed the environments and what changes were made.
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Data Isolation: Proof of how data is isolated and segregated between development, test, and production environments. This includes database access controls, encryption measures, and data masking techniques.
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Configuration Management: Evidence of how configurations are managed separately for each environment to ensure consistency and to prevent unauthorized changes.
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Change Control Process: Documentation of the change control process for moving code or configurations between environments. This should include approval procedures, testing requirements, and documentation reviews.
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Code Version Control: Details of how code is version-controlled to maintain separate repositories for each environment. This helps track changes and ensures that only approved code is promoted to production.
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Test Data Management: Documentation of how test data is generated or anonymized to avoid using sensitive or real production data in testing environments.
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Network Segmentation: Proof of network segmentation to prevent direct communication between development, test, and production environments. This includes firewall rules and network access controls.
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Incident Response Plan: Evidence of an incident response plan that addresses security breaches or incidents involving any of the environments. The plan should outline how incidents are detected, investigated, and mitigated.
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Security Training Records: Records of security training provided to staff working in development, test, and production environments. This ensures that employees are aware of their responsibilities in maintaining the separation and security of these environments.
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Penetration Testing Reports: Results of penetration testing conducted to assess the effectiveness of the separation controls and identify potential vulnerabilities.
By reviewing these pieces of evidence, an auditor can verify that appropriate measures are in place to maintain the separation of development, test, and production environments. The goal is to prevent unauthorized access, data breaches, and configuration drift, thereby enhancing the overall security posture of the organization's information systems.