Webhook Security Overview Webhooks deliver real-time data to your app, but an open endpoint is an attack surface. Without verification, anyone can POST fake events to your webhook URL. This skill covers signature verification, replay protection, idempotency, and reliable processing patterns. Instructions Step 1: Signature Verification Every major provider signs webhook payloads with HMAC. Verify before processing. Step 2: Stripe Webhook Verification Step 3: Replay Protection Step 4: GitHub Webhook Verification Guidelines - ALWAYS verify signatures before processing. Never trust unverified web…