API Authentication & Authorization
OAuth 2.0 flows, JWT structure and validation, API keys, mTLS, OIDC, token introspection, and Spring Security integration.
OAuth 2.0 flows, JWT structure and validation, API keys, mTLS, OIDC, token introspection, and Spring Security integration.
Security patterns specific to REST and GraphQL APIs — API keys, rate limiting, input validation, schema validation, mass assignment, sensitive data exposure, API versioning security, and API gateway hardening.