Over the past few weeks there have been a number of security updates in the Joomla world. These include Joomla itself, Fabrik, EasyBlog as well as a number of others.
If you use any of these and haven't updated your site in the past 3 weeks then you are running an insecure web site.
If you have not updated your web site in longer than 3 weeks you likely already have a security vulnerability on your site, and as most security professionals say ... you are either hacked and know about it or are hacked and don't know about it.
GET YOUR SITE UPDATED NOW!