WordPress is a great content management system. But it can be vulnerable if you don’t take steps to safeguard it. Problogger covers a few simple, and not-so-simple, steps to make your site safer.
A few to remember:
Create Strong Passwords. You should be doing this anyway. And change the default “admin” login to another username.
Keep Your Site Updated. And clean up your site (i.e., delete plug-ins and themes you don’t need to reduce the hacking options).
Back up your site. Really. Do it soon.
Be Vigilant. Don’t leave your site unattended for long periods of time.
* * *
Source: How to Protect Your WordPress Site Before the Hackers Lock You Out! || Problogger