    public function admin()
    {
        User::secure();
        System::gZip();
        if (User::access(2)) {
            // System::versionCheck();
            Control::handler('backend');
        } else {
            Theme::admin('header');
            Control::error('noaccess');
            Theme::admin('footer');
        }
        System::Zipped();
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.