Installing the fix malware problems free Scan plugin alert you that you might have missed, and will check most of this for you. Additionally, it will tell you that a user named"admin" exists. Of course, that is the user name. If you desire you can follow a link and find directions for changing that name. I believe that a strong password is security that is good, and there have been no attacks on the numerous sites that I run because I followed those steps.
Truth is, there is really no way if your site is targeted by a master of this script. Everything you are about to read look at this site below are some precautionary actions you can take to minimize the threat to an acceptable level. If your WordPress site is protected odds are a hacker would prefer picking another victim.
Harness Scanner goes through the files on your website post, comment and database tables. You are also notified by it for plugin names that are odd. It does not remove anything, it warns you.
You may extend the plugin features with premium plugins such as: Amazon S3 plugin, Members only plugin, DropShop etc.. So I think this plugin is a good choice and you can use it for imp source free.
Do your homework and some searching, but if you're pressed for time and need to get this done once and for all, try out the WordPress find more safety plugin that I use. It is a relief to know that my website (and company!) are secure.