Should we set up a to block malicious bots? Share public link
// 1. Rate limiting per IP & per card $ip = $_SERVER['REMOTE_ADDR']; $card_hash = sha1($cc . $ip); $attempts = apcu_fetch($card_hash) ?: 0; if ($attempts > 3) die("Too many attempts"); cc checker script php
If your server hosts an unauthorized CC checker: Should we set up a to block malicious bots