By default, the latest version of WordPress is pretty secure. Anything which may have been added to some fix wordpress malware scanner plugins has been considered by the development team of WordPress . In the past , WordPress did have holes but most of them are filled up.
An easy way to maintain WordPress safe is to use a few tools that are built-in. To begin with, do not allow people to list the files run a web host security scan and automatically backup your web hosting account.
Harness Scanner goes through the files on your website database, comment and post tables seeking anything suspicious. You are also notified by it for unusual plugin names. It doesn't remove anything, it simply warns you for potential threats.
Can you view that folder what if you go to WP-Content/plugins? If so, upload this blank Index.html file inside that folder as well so people can't see what plugins you have. Someone can use this to get access because if your existing version of WordPress is current, if you are using a i loved this plugin or an old plugin with a security hole.
The plugin should be updated play nice with all of your other plugins, to stay current with the latest WordPress release and have WordPress and restore capabilities. The ability to clone your site (along with regular copies ) can be useful if you ever need to do an offline site redesign, among other things.