Cloning, as it applies to fix hacked wordpress database, is the act of making an exact copy of your WordPress install. What is great is that in just a few clicks, you can do it with the right software. There are a number of reasons why you might want to do this. Here you could look here are just a few.
There are ways to pull this off, and many involve copying and FTPing files, exporting and re-establishing much more and databases. Some of them are very complex, so it's important that you select the one that is right. Then you might want to look into using a plugin for WordPress backups if you are not of the persuasion that is technical.
You first must create a new user with administrator rights, before you can delete the default admin account. To do this go to your WordPress Dashboard and click on User -> Create New User. Then enter all of the information you need to enter.
Pathological-looking phrases that were whitelists and black based on which area they appear within, in a page request. (unknown/numeric parameters vs. known post bodies, comment bodies, etc.).
Using a plugin for WordPress security just makes great sense. Backups will need to be carried out on a regular basis. Do not become a victim of not being proactive about your site as a result!