While I was away over the weekend, it appears that a large number of bloggers who use WordPress have been hacked and a lot of damage has been done. It seems this problem has shown up for a large number of people, including some very high profile bloggers. Among them was Robert Scoble, whose blog was among those websites which were hacked. Damages on Scoble’s site included porn information being placed in old posts, 2 entire months of content being deleted, and more. Of course the porn then led to his blog being completely banned from Google! Scoble is not the only one having these problems, however, and even lesser known bloggers have been attacked. You can read more in this WordPress support forum thread.
If you are wondering what the one thing all of these WordPress sites have in common, the problem is they were all using old versions of WordPress. As someone that owns and operates well over 100 WordPress installations, I certainly understand the pain it can be to upgrade to the latest version of WordPress every time a new release happens, but I hope this goes to show why it is so important to take the time to upgrade all of your WordPress installations be using the most recent version of WordPress.