Cloning, as it applies to fix hacked wordpress, is the act of making an exact replica of your WordPress install. What is great is that with the correct software, you can do it. There are a number of reasons. Here are just a few.
Backup plug-ins is also significant. You need to backup all the database and files so in case of a sudden attack, you can bring your own blog back like nothing.
A snap to move - If, for some reason, you want to relocate your website, such as a domain name change or a new hosting company, getting your files at your fingertips can save you oodles of time, hassle, and the need for tech help.
It's really sexy to fan the flames of fear. That is what journalists and bloggers and politicians and public figures do. It's great for readership and it brings money. Balderdash.
Do your homework and some searching, but helpful siteimage source if you are pressed for time and need to get this done once and for all, try out the WordPress security plugin that I use. It's a relief to know that my website (and business!) are secure.