git.stella-ops.org/docs/notifications/security/webhook-ack-hardening.md

Webhook Acknowledgment Hardening

This document describes the security measures for webhook acknowledgment validation.

Overview

Webhook acknowledgment hardening ensures that webhook deliveries are properly verified and acknowledged.

Security Measures

• HMAC signature verification for all webhook payloads
• Timeout handling for slow webhook endpoints
• Retry logic with exponential backoff
• Dead letter queue for failed deliveries

Configuration

Webhook endpoints must be configured with:

• Secret key for HMAC signing
• Signature header name
• Timeout duration
• Maximum retry attempts