@Ricardo...thanks for the tips. is it also possible that the weak part is our server? we have an enterprise edition of dotnetnuke and it is 5.6 so i guess no need to upgrade right?
when i checked the webserver, there are some alien txt files created by the hacker..some have writings on it that says hacked by pmei - indonesian hacker! have you heard some cases like this before from this so called indo hacker?
another thing, when you load the site and click view source from the browser, at the bottom part , just before the "</body>" tag, you can find ff: (which of course these things where not part in any of our skins. even if i change skin, it will still appear)
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