api-security

A webhook endpoint is an internet-facing parser plus an authentication problem. I verify signatures, enforce recent timestamps, and store event IDs to block replay attempts. Reliability matters too, so handlers should be idempotent and fast to acknowl

CORS is not an authentication control, but bad CORS settings still widen attack surface unnecessarily. I allow exact origins, restrict methods and headers, and avoid wildcard credentials combinations entirely. If the front-end origin list is unclear,