iThemes Security Pro v6.5.0 is the best premium WordPress security plugin that works to fix common WordPress security issues you may not know exist. With WordPress's two-factor authentication, users are required to enter both a password and a secondary code sent to a mobile device such as a smartphone or tablet. The iThemes Security Pro WordPress plugin will help give you peace of mind and keeps the bad guys out. for more information about this WordPress plugin please click On Demo Button.