Ayzal Guard scores email, IP, and velocity before your checkout calls the payment gateway. Botnets flood checkout forms with stolen cards to validate them. Every failed attempt still charges you an authorization fee and counts against your fraud ratio. One API call in between form submit and payment gateway: → Disposable email detection → IP reputation (proxy, VPN, Tor, datacenter, recent abuse) → Canonical velocity Integration guides for Stripe, PayPal, Express, Flask, PHP, and Rails in the KB.