/**
  * Sets the security level for the Backend login
  *
  * @return	void
  */
 function start()
 {
     $securityLevel = trim($GLOBALS['TYPO3_CONF_VARS']['BE']['loginSecurityLevel']);
     $this->security_level = $securityLevel ? $securityLevel : 'superchallenged';
     parent::start();
 }
 /**
  * Logs out the current user and clears the form protection tokens.
  */
 public function logoff()
 {
     if (isset($GLOBALS['BE_USER'])) {
         t3lib_formProtection_Factory::get()->clean();
     }
     parent::logoff();
 }