API security is not one control. A secure API combines authentication, authorization, validation, rate limiting, runtime monitoring and careful response handling.
Most API checklists stop at auth and input validation. Production APIs also need abuse detection, schema drift visibility, rate limits and response inspection so secrets and PII do not leak out.
Every protected API route should know who is calling it and what that caller is allowed to do. Authentication proves identity; authorization limits actions.
Avoid relying on frontend checks. Enforce permissions on the server for every sensitive route.
Validate request shape, types and size before business logic runs. Rate-limit sensitive routes, login flows, expensive endpoints and write-heavy operations.
Runtime protection helps when abuse does not match a single static rule: unusual payloads, scanner probes, schema drift and repeated suspicious behavior.
APIs often fail by returning too much: internal IDs, stack traces, API keys, tokens, private user data or model outputs containing secrets.
Silker can inspect outgoing responses for sensitive data and report risky behavior alongside incoming threats.
Run automated security tests against common OWASP API risks and keep them close to the deployment workflow. Manual audits are useful, but they are too slow as the only control.
Silker ties this to runtime security with automated pentest workflows and dashboard visibility.
Authorization is usually the highest-risk control because broken object-level authorization can expose real customer data even when authentication works.
No. Rate limiting reduces abuse, but APIs also need authentication, authorization, validation, runtime monitoring and response leak prevention.
Silker can run as a reverse proxy or SDK to inspect API traffic, detect suspicious payloads, learn API behavior, block scanner probes and inspect responses for sensitive data leaks.
Start with the free scan, then deploy Silker as an SDK or Docker reverse proxy.
Scan your app - free