In reply to Alec.

Right solution would be not to use "poorly configured server". So instead of investing 30$ to Sucuri, it's much smarter to invest that money to the correct and secure server setup. If the server setup is not secure, no any plugin, service or add-on will help you. For example if somebody can get your root access, you can have anything installed on your server, whole security team in the house, one line of code can delete everything forever ;)