20 May 2026 6 min read Security
Turning the secure-by-design principle into concrete engineering practices you can evidence.
Principle
Secure-by-design means security is a first-class requirement from architecture through release — not a layer added at the end. The CRA expects it and auditors look for it.
Concrete practices
- Threat modelling at design time.
- Minimised attack surface and least privilege.
- Memory-safe choices and input validation.
- Security testing in CI and dependency scanning.
Evidence it
Keep design notes, threat models and test results — these become technical-documentation evidence.
This is an educational explainer. For the canonical regulation reference, see the dedicated Security page — or run an assessment to see how it applies to your product.