Security & data protection
Bank-grade transport encryption, cryptographically verified messaging, and row-level data isolation — built in from day one, not bolted on.
HMAC‑SHA256 webhook signature verification
Every incoming message is cryptographically verified as genuinely originating from Meta before it's processed.
Constant‑time comparison
Token and signature checks are timing‑attack resistant, so response time never leaks a hint about a valid credential.
Row‑level security with auth.uid() isolation
Each client can only ever see their own data — enforced at the database layer, not just the application layer.
Daily rate limiting & cost‑abuse protection
Automated defenses against spam and message‑flood attempts, protecting both your account and your bill.
HTTP Strict Transport Security (HSTS)
Encrypted connections are enforced end to end — no downgrade to an unencrypted connection is ever possible.
Content Security Policy, anti‑clickjacking & MIME‑sniffing protection
Browser‑level defenses that block script injection, iframe embedding attacks, and content‑type spoofing.
Payload flood protection
Oversized or malformed requests are rejected before they ever reach application logic.
Input sanitization pipeline
Every message passes through control‑character and injection hardening before it's stored or acted on.
Secrets isolation
Privileged API keys and credentials are never exposed to the browser or client‑side code.
Least‑disclosure health monitoring
System status is observable without ever leaking the secrets or internals that make it work.
Bank-grade transport encryption, cryptographically verified messaging, and row-level data isolation — enterprise-grade security with a defense-in-depth architecture.