4. Secure External Access to Development Environments Verified

Verification Criteria: Access granted to external developers is restricted via Multi-Factor Authentication (MFA) and limited to the specific environments required for the project (Least Privilege). Required Evidence: Identity and Access Management (IAM) logs showing MFA-protected logins and restricted VPN/Bastion host access for third-party IDs. Pass/Fail Test: If an external developer can access the development network using single-factor authentication or has access to internal production servers, mark as Non-Compliant.

5. Automated Security Scanning of Outsourced Code Confirmed

Verification Criteria: All code delivered by the third party is subjected to automated Static Application Security Testing (SAST) and Software Composition Analysis (SCA) prior to acceptance. Required Evidence: SAST/SCA scan reports (e.g., Snyk, SonarQube) specifically for the modules delivered by the external provider. Pass/Fail Test: If outsourced code is integrated into the main branch without a documented vulnerability scan, mark as Non-Compliant.

6. Independent Vulnerability Assessment and Pentesting Validated

Verification Criteria: Major deliverables from the outsourced provider undergo an independent penetration test to verify the efficacy of the implemented security controls. Required Evidence: Signed Penetration Test report dated within the project completion window and a corresponding Remediation Tracker. Pass/Fail Test: If a third-party application is promoted to production without a verified independent security assessment, mark as Non-Compliant.

7. Secure Handling of Sensitive Data by Providers Verified

Verification Criteria: Technical mechanisms prevent the use of live production data by outsourced developers, enforcing the use of masked or synthetic data in external environments. Required Evidence: Data Masking logs or UAT environment snapshots demonstrating the absence of legitimate PII/financial records. Pass/Fail Test: If unmasked production PII is found residing in a third-party developer's environment or a shared staging area, mark as Non-Compliant.

8. Supply Chain Dependency Vetting Recorded

Verification Criteria: The organisation verifies that the outsourced provider has a process to vet and monitor the security of fourth-party libraries and open-source components used in the build. Required Evidence: Software Bill of Materials (SBOM) provided by the developer and the organisation's internal verification logs. Pass/Fail Test: If the outsourced developer cannot provide a list of third-party libraries used in the deliverable or their associated licenses, mark as Non-Compliant.

9. Developer Background and Personnel Security Confirmed

Verification Criteria: The outsourced provider confirms that all personnel assigned to the project have undergone appropriate background screening and have signed non-disclosure agreements (NDAs). Required Evidence: Attestation of Background Checks from the provider or signed NDAs for each named developer on the project. Pass/Fail Test: If the provider cannot demonstrate that background screening has been conducted for developers with access to sensitive source code, mark as Non-Compliant.

10. Formal Acceptance and Security Sign-off Verified

Verification Criteria: A formalised acceptance process exists where the organisation's security lead signs off on the third-party deliverable based on the successful results of all security tests. Required Evidence: Final Project Acceptance Document or "Go/No-Go" meeting minutes with a specific "Security Approval" field. Pass/Fail Test: If the outsourced code is deployed to production without a formal record of internal security acceptance, mark as Non-Compliant.

ISO 27001 Annex A 8.30 Audit Checklist [+ Templates]

Q: 1. Outsourced Development Security Policy Formalisation Verified

Verification Criteria: A formalised policy exists defining the mandatory security requirements, coding standards, and testing protocols for all outsourced development projects. Required Evidence: Approved "Third-Party Development Policy" or "Outsourced Coding Standard" with explicit version control. Pass/Fail Test: If the organisation cannot produce a formalised document specifying the security mandates for external developers, mark as Non-Compliant.

Q: 2. Contractual Security Obligations and Right-to-Audit Confirmed

Verification Criteria: Technical and organisational security requirements, including vulnerability remediation SLAs and the right to perform independent audits, are embedded in the developer's contract. Required Evidence: Signed Master Service Agreement (MSA) or Statement of Work (SOW) with highlighted security clauses and audit rights. Pass/Fail Test: If a third-party developer has access to the codebase without a contractually binding security schedule, mark as Non-Compliant.

Q: 3. Intellectual Property and Source Code Ownership Validated

Verification Criteria: Legal and technical provisions ensure the organisation retains ownership and control over the source code, preventing unauthorised reuse or retention by the provider. Required Evidence: Contractual "Ownership of Work Product" clauses and access logs from the organisation-owned version control system (VCS). Pass/Fail Test: If the outsourced developer hosts the organisation's production source code on an unmanaged, private repository without administrative oversight, mark as Non-Compliant.

In this ultimate how to audit guide to ISO 27001 Annex A 8.30 Outsourced Development, you will learn directly from an ISO 27001 Lead Auditor:

10 Key Audit Steps
Verification Criteria
Required Evidence
The Pass / Fail Test

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.

ISO 27001 Annex A 8.30 Outsourced Development Audit Checklist

ISO 27001 Annex A 8.30 Outsourced Development Audit Checklist

Auditing ISO 27001 Annex A 8.30 Outsourced Development is the technical verification of security integrity within third-party engineering workflows. The Primary Implementation Requirement is the enforcement of contractual security mandates and automated code scanning, providing the Business Benefit of protecting intellectual property while ensuring external deliverables meet internal security standards.

This technical verification tool is designed for lead auditors to establish the security integrity of software developed by third-party providers. Use this checklist to validate compliance with ISO 27001 Annex A 8.30.

1. Outsourced Development Security Policy Formalisation Verified

Verification Criteria: A formalised policy exists defining the mandatory security requirements, coding standards, and testing protocols for all outsourced development projects.

Required Evidence: Approved “Third-Party Development Policy” or “Outsourced Coding Standard” with explicit version control.

Pass/Fail Test: If the organisation cannot produce a formalised document specifying the security mandates for external developers, mark as Non-Compliant.

2. Contractual Security Obligations and Right-to-Audit Confirmed

Verification Criteria: Technical and organisational security requirements, including vulnerability remediation SLAs and the right to perform independent audits, are embedded in the developer’s contract.

Required Evidence: Signed Master Service Agreement (MSA) or Statement of Work (SOW) with highlighted security clauses and audit rights.

Pass/Fail Test: If a third-party developer has access to the codebase without a contractually binding security schedule, mark as Non-Compliant.

3. Intellectual Property and Source Code Ownership Validated

Verification Criteria: Legal and technical provisions ensure the organisation retains ownership and control over the source code, preventing unauthorised reuse or retention by the provider.

Required Evidence: Contractual “Ownership of Work Product” clauses and access logs from the organisation-owned version control system (VCS).

Pass/Fail Test: If the outsourced developer hosts the organisation’s production source code on an unmanaged, private repository without administrative oversight, mark as Non-Compliant.

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How to Audit ISO 27001 Annex A 8.30: Outsourced Development

Table of contents

ISO 27001 Annex A 8.30 Outsourced Development Audit Checklist

1. Outsourced Development Security Policy Formalisation Verified

2. Contractual Security Obligations and Right-to-Audit Confirmed

3. Intellectual Property and Source Code Ownership Validated