ingest-webhook-secure

Webhook replay protection is achieved by enforcing signed-timestamp windows that reject expired requests. This mechanism, combined with idempotent deduplication, ensures maliciously replayed valid payloads are dropped and prevents duplicate event processing during retry storms.

Webhook idempotency handles duplicate events from external services by using atomic deduplication to ensure exactly-once processing. When a provider retries a delivery, the endpoint recognizes the duplicate payload and safely ignores it, preventing duplicate side effects.

Build a single hardened intake endpoint that centralizes cryptographic signature verification, replay protection, and idempotent deduplication. This approach maintains strict security boundaries and reliably handles retries when integrating with multiple third-party APIs simultaneously.

Yes, constant-time cryptographic validation supports both HMAC and asymmetric signatures over raw request bodies. This covers provider requirements for platforms like Stripe, GitHub, and Slack, ensuring authenticity regardless of the specific signature scheme used.

Idempotency and replay protection are needed to maintain high-reliability integration endpoints. Replay protection uses signed-timestamp windows to reject malicious traffic, while idempotent deduplication ensures duplicate event processing is avoided during external service retry storms.