Updates - Protect Your Site From Being HackedI have had two WordPress blogs hacked into formerly. That was in a time when I was doing virtually no online advertising, and until I found time to deal with the situation (weeks later), these sites were penalized in the main search engines. They weren't eliminated the ratings were reduced.
The repair hacked wordpress site Codex has an outline of what permissions are acceptable. File and directory permissions can be changed either via an FTP client or within the administrative page from your hosting company.
I protect an access to important files on the site's server by placing an index.html file in the particular directory, that hides the files from public view.
Keep control of your assets that are online - Nothing is worse than having read what he said your livelihood in somebody else's hands. Why take chances with something as important as your website?
As I (our fictitious Joe the Hacker) know, people have far too many usernames and passwords to remember. You've got Twitter, Facebook, your online banking, LinkedIn, two site logins, FTP, web hosting, etc. accounts which all include logins and passwords you will need to remember.
Implementing all the above will take less than an hour to finish, while making your WordPress website more immune to intrusions. Over 1 million WordPress sites were last year, largely due to preventable safety gaps. Have yourself prepared and you're likely to be on the safe side.