[WeChall] Are you serial

We are serialsly trying to build a secure website.
This time, we have it secure and extensible, and of course you can see all the sourcecode again:

code.php
insecure.inc.php
SERIAL_LoginForm.php
SERIAL_LogoutForm.php
SERIAL_Solution.php
SERIAL_User.php

As always, code you see is code in use.

GeSHi`ed PHP code for SERIAL_Solution.php

<?php
class SERIAL_Solution
{
        public function __wakeup()
        {                if (false === ($chall = WC_Challenge::getByTitle(GWF_PAGE_TITLE)))
                {
                        $chall = WC_Challenge::dummyChallenge(GWF_PAGE_TITLE, 2, 'challenge/are_you_serial/index.php');
                }
                $chall->onChallengeSolved(GWF_Session::getUserID());        }
}
?>