A major vulnerability in the WordPress plugin WP Super Cache, in versions prior to 1.4.4, has been announced this week. To keep your site safe, please update now to version 1.4.4.
For those wanting more details, you can read all about it on Sucuri’s blog.
In other security news, the FBI announced this week that WordPress owners who do NOT keep their sites updated are vulnerable to attack from ISIS. So, not only is keeping your WordPress site updated good for the welfare of your blog, it also helps national security!