Security by Design

Security must be built into the system architecture from the beginning - not added as an afterthought.

The Principle

Security by Design means that security requirements are defined and considered from the very start of the requirements analysis and system design. Security is not a feature to be added later - it is a fundamental architectural decision.

This approach is fundamentally different from traditional development where security is often addressed only after the core functionality is complete, leading to costly retrofits and vulnerabilities.

Implementation in Signando REST

  • OpenAPI as contract: Your API spec defines what's allowed
  • Allowlist approach: Only explicitly defined requests pass
  • Bidirectional validation: Both input and output are checked
  • Memory-safe Rust: Eliminates buffer overflows by design
  • Isolated components: Each stage has minimal access

Build Security from Day One

Learn how to implement Security by Design in your API infrastructure.

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