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 how to fix hacked wordpress site 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. Needless to say, that is your user name. You find directions for changing that name, if you desire and can follow a link. I believe that there is a password good security, and since I followed those steps, there have been no attacks on the sites that I run.
If you're one of the proactive ones, I might find it somewhat more difficult to crack your password. But if you're one of those ones, I might get you.
It's a WordPress plugin. They are drop dead easy to install, have all the functions you need for a job like this, and are relatively inexpensive, especially when compared to having to employ someone to get this done for you.
You can make a firewall that blocks hackers from infiltrating your blogs. The hacker is prevented by the firewall from coming into your own files. You must also have updated version of Apache. Upgrade your PHP as well. It is essential that your system is full of upgrades.
But realize that online security is something that you really need to start thinking about. Don't just be the type, consider steps to start today, protecting yourself. Don't let Joe the Hacker make your life miserable have a peek at this site and turn everything that you've worked so hard in creating come crashing down in a matter of seconds.