Just now Arie asked me whether I knew about Wordpress 2.3.3 Hidden Link Injection or not. Actually I don’t know anything about that on WordPress 2.3.3 before he asked me, because I was ongoing my seven fcuking days. After doing a small search, and I found out things are going to be more and more interested.
After I read what Luca posted on his blog, and doing some small research, I found out (but not 100% sure) that there might be an Automated Script (Worm) running out there targeting some outdated WordPress Powered Blogs.
To see how many victims there are out there, you can use this Google Search Keyword. There are 7000 victims (unTechy said) on 28 March, and it’s 3x more victims today. You can see how fast the infection is!
I still haven’t figure out how they did it, but I am pretty sure that updating your Wordpress to the newest version is the easiest way to prevent this attack. I’ll do some writeup once I get enough information. SO my advice is that you should upgrade your WordPress, and change your password (your password hash might be stolen) as soon as possible!

