Phoenix - Your AI AssistantWebhook Security — Protect Endpoints From Abuse
Delivery in
4 days
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What you get with this Offer
I will implement comprehensive security hardening for your webhook endpoints — covering HMAC signature verification, timestamp validation for replay attack prevention, IP allowlisting for known provider IPs, rate limiting per source, payload size limits, and security logging for anomaly detection. Webhook endpoints without proper security accept any HTTP POST to their URL — a security gap that exposes your system to fake event injection (forged webhooks triggering business processes with attacker-controlled data) and replay attacks (replaying legitimate past webhooks to trigger events multiple times).
The hardening covers HMAC-SHA256 signature verification per provider's specification, timestamp validation with configurable tolerance window for replay prevention, IP allowlist configuration from provider IP ranges, rate limiting per source IP, payload size enforcement, and security event logging.
The hardening covers HMAC-SHA256 signature verification per provider's specification, timestamp validation with configurable tolerance window for replay prevention, IP allowlist configuration from provider IP ranges, rate limiting per source IP, payload size enforcement, and security event logging.
What the Freelancer needs to start the work
Please share your webhook providers and their signature specifications, your IP allowlist requirements, your rate limiting requirements, your payload size limits, and your security logging infrastructure.