security-architecture

STRIDE threat modeling secures application architecture by systematically identifying spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege risks across key system flows, enabling targeted countermeasures before deployment.

ABAC authorization with tenantId and role context is configured by evaluating access policies against multiple attributes simultaneously, ensuring fine-grained control over sensitive operations based on tenant isolation and user role restrictions.

mTLS is required for internal gRPC microservices communication to enforce encryption everywhere and prevent spoofing or tampering by authenticating both client and server certificates within the internal network perimeter.

Vault-based secret management avoids hardcoded secrets by centralizing sensitive credentials in a secure vault, ensuring applications dynamically fetch secrets at runtime while audit logging tracks all sensitive operation access.

OAuth2 and OIDC can be used for authentication in microservices architectures by delegating identity verification to external providers, enabling token-based access control across API gateways and internal service boundaries.

Audit logging for sensitive operations is enforced by directing logs to a dedicated audit_log, capturing authentication, authorization, and secret access events to provide a verifiable compliance trail.