Javascript was injected into my Joomla website?

Question

Today I found foreign JavaScript on my homepage along with a backlink to a website I don't recognize (although the backlink is not visible when viewing my homepage, they have positioned it somehow so that it is hidden but search engines still find it).

I was wondering how my Joomla website managed to become compromised? Is there any possibility you can think of? How can I protect my website from this attack in the future?

Answer 1

First of all which version of joomla are you using.?

There is some possibilities to hack the Joomla Version of 1.5.23 or some similar version hacked and some bad script attached in all js files or may be some rewrite url condition in your .htaccess file. the best option to prevent the problem is Update your Joomla Version and change your admin and FTP Password.