Just read this article last week and I added a couple new plugins for security. Namely, I added Limit Login and Better WP Security. The very next day after adding these plugins it was already blacklisting IP’s coming from China that have been trying to brute force their way into my site.
If you run a WordPress site I can’t recommend enough that you beef up your password strength and add those plugins (if you haven’t already). AND MAKE SURE YOU KEEP YOUR WORDPRESS INSTALL UP TO DATE!!!! The amount of bogus traffic over the past couple of weeks has been scary. You have been warned.