IEC 62443-4-1 Secure Development Lifecycle. Reference Process and Practical Implementation

This package provides a documented Secure Development Lifecycle (SDL) aligned with IEC 62443-4-1, intended to serve as a practical reference process for organizations developing and maintaining products used in Industrial Automation and Control Systems (IACS). It is designed as a starting point, translating the standard’s process requirements into a structured, lifecycle-based model that can be realistically adopted and adapted within existing development environments.

The process covers all IEC 62443-4-1 practices, including security management, security requirements definition, secure design, secure implementation, verification and validation, vulnerability handling, security updates, and security user documentation. It focuses on the elements expected during assessments, such as defined roles and responsibilities, documented activities, reusable templates, and lifecycle traceability, enabling consistent application across projects.

By using this material, organizations avoid starting from a blank page when preparing for IEC 62443-4-1 compliance. It supports alignment between engineering, security, and management, and establishes the process foundation required before pursuing product-level certification under IEC 62443. The process must be tailored and implemented within the organization; certification outcomes depend on proper adoption and assessment by an accredited certification body.