MyBlog security ugrade highly recommended:
Through this vulnerability in myblog they are able to inject code into an article that could modify template fils and other files on your site.
Template security tip:
Since template are a common areia for hackers to place malitious code injections, it is always good practice to keep your template up to date and delete old templates that are not in use since a hacker can access any templat on your site if they knopw the name of the template. Most hackers trying to get in this way are going to know the names of these templates.
Some helpful security links:
Security Wiki: http://docs.joomla.org/Category:Security
Security Forum: http://forum.joomla.org/viewforum.php?f=432
If your site requires this or other upgrades you can contact: www.cnpsupport.com for professional Joomla CMS support or call 1-508-644-1553 to speack with a Jooomla professional.