Cloning, as it applies to fix malware problem, is the act of making an exact copy of your WordPress install. What is good is that you can do it in only a couple clicks. There are a lot of reasons. Here are just a few.
There are ways to pull off this, and a lot involve re-establishing much more and databases and FTPing files, exporting and copying. Some of them are very complicated, so it's imperative that you go click for more for the best one. If you're not of the persuasion that is technical, then you might want to check into using a plugin for WordPress backups.
You should also place the"Anyone Can Register" in Settings/General to off, and you should have some sort of spam plugin. Akismet is the one I use, the old standby, but there are lots of them these days.
As I (our fictitious Joe the Hacker) know, people have way too many usernames and passwords to remember. You've got Twitter, Facebook, your online banking, LinkedIn, two blog logins, FTP, internet hosting, etc. accounts that all come with logins and passwords you need to remember.
Implementing all of the above will probably take less than an hour to complete, while making your WordPress site try here more immune to intrusions. Over 1 million WordPress websites were this past year, largely due to easily preventable security gaps. Have yourself prepared and you are likely to be on the safe side.