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.
The fix wordpress malware plugin Codex has an outline of what permissions are okay. Directory and file permissions can be changed via an FTP client or within the page from the hosting company.
It's not unusual for sites to suddenly be hacked by some person today. In fact, even domains get hacked. If you are not a programmer or a programmer, there's absolutely no way you will understand anything about codes or programming languages. This is the main reason why a number of the men and women who do not know anything wind up thinking if there are some ways to protect investments and discover here their sites from such hackers.
Harness Scanner goes through the files on your site comment database and post tables seeking anything suspicious. You are also notified by it for plugin names. It doesn't remove anything, it warns you.
Take note of your new password! I recommend the version of the software that is secure *Roboform* to look these up remember your passwords.
Always keep in mind the security of your sites depend on how you handle them. Make certain that you follow these basic tips to avoid exploits and hacks on sites and your own blogs.