I have had two WordPress blogs hacked into in the past. That was at a time when I was doing very little internet marketing, and until I found time to address the situation (months later), these sites were penalised in the search engines. They were not removed, but the rankings were reduced.
Finally, installing the fix wordpress malware plugin Scan plugin will check all this for you, and alert you that you may have missed. Additionally, it will inform you that a user named"admin" exists. Of course, that is the administrative user name. If you wish you can follow a link and find directions for changing that title. I believe that there is a password enough security that is good, and there have been no attacks on the sites that I run, because I followed those steps.
Is also important. You need to backup all the database and files you can bring your site back like nothing happened.
For me it's a WordPress plugin. They are drop dead simple to set up, have all the more information features you need for a task such as this, and are relatively cheap, especially when compared to having to employ someone to have this done for you.
Install the WordPress Firewall Plugin. Prevent and this plugin investigates web her latest blog requests with WordPress-specific heuristics that are easy to identify obvious attacks.
Oh . And incidentally, I was talking about plugins. When you get a plugin, make sure it's a safe one. Do not install check any plugin just because the owner is saying on his website that plugin will help you do that or this. Maybe use perhaps, or a test blog to check the plugin get a software engineer to analyze it. This way is not a threat for you or your business.