Cloning your site is just another level in fix wordpress malware cleanup which may be useful. Cloning simply means that you have backed up your site to a totally different location, (offline, as in a folder, so as not to have SEO problems) where you can get it in a moment's notice if necessary.
You can search. If your website is hacked by hackers, More Help you can easily restore your site by means of your backup files and change everything that must be changed.
Recently, the blog of Reuters was murdered by an unknown hacker and published informative post a news article that was fake. Since Reuters is a popular news site, their you can check here reputation is destroyed due to what the hacker did. The same thing may happen to you if you do not pay attention.
Black and whitelists phrases based on which field they appear within. (unknown/numeric parameters vs. known article bodies, remark bodies, etc.).
Do your homework and some hunting, but if you're pressed for time and need to get this done once and for all, try out the WordPress safety plugin that I use. It is a relief to know that my site (and business!) are secure.