coder-system-design-security

To implement security by design, establish a baseline for architecture decisions by defining explicit security gates, mapping trust boundaries, and selecting controls based on data classification before development begins.

Threat modeling for critical system paths identifies potential security risks across authentication and data flows. You need it when designing new services handling sensitive data to ensure compliance and security verification.

Selecting security controls based on data classification involves evaluating the system context and impact level of the data, then matching those requirements with appropriate authentication models and compliance rules.

Establishing security gates for a secure development lifecycle requires setting explicit security checks and quality rules that enforce architecture decisions and control verification before implementation or release stages.

Yes, this secure architecture approach addresses supply-chain security and compliance by integrating them into the baseline security requirements and verification processes used throughout the system design phase.

Applying security-by-design to existing architecture may require significant retroactive updates to threat models, trust boundaries, and authentication models, as the baseline is optimized for establishing controls from the outset.