Cloning, as it applies to fix hacked wordpress, is the act of making an exact copy of your WordPress install. What is good is that you can do it in just a few clicks. There are a lot of reasons why you may want to do this. Here are just a few.
Protect your login credentials - Don't keep your login credentials where a hacker might find them. Store them offsite, and even offline. Roboform is for protecting them good , too. Food for thought!
It represents a essential task while it's an odd term : creating a WordPress copy of your website to work on offline, or in case something should go amiss. We are not only being obsessive-compulsive here: servers go down every day, despite their promises of 99.9% uptime, and if you've had this happen to you, you know the panic is it can cause.
Note that this last step for new installations should only try. If you would like to do find out here it you need to change all the table names within the database.
Free software: If you have installed scripts that are free such as Wordpress, search Google for'wordpress security'. You will get many tips.