Last few days , Youjoomla Team was testing security or better said,
testing the best protection you can use in your Joomla! website. We
have focused mainly on XSS (
cross site scripting ) since it is one of the most common ways for
intruder to get in or abuse your website. If you did not know, one of
the best ways to protect yourself from XSS is to turn your Joomla! SEF on.