IEC 62443 – secure development lifecycle in industrial environments
IEC 62443 is a comprehensive industrial cybersecurity framework that links security to architecture, product design and development. It’s not just “an IT firewall” — it’s a way to design systems so risks remain manageable.
Practical cornerstones
- Scopes and zones: what you protect and why — and how integrations are implemented in a controlled way.
- Identities and access: roles, least privilege and logging so events are traceable.
- Secure development lifecycle: requirements, testing, releases and change control as a repeatable backbone.
- Vulnerabilities and updates: a process for handling findings and delivering fixes.
- Documentation: rationale for architecture, decisions and exceptions — so the whole is auditable.
How this connects to CRA
IEC 62443 provides a concrete blueprint for industrial environments. CRA adds EU-level product security and lifecycle expectations. Together they steer organisations toward practices that benefit both engineering teams and customers.