tiger - 1:22 pm on Jun 27, 2012 (gmt 0) [edited by: engine at 3:36 pm (utc) on Jun 27, 2012]
I have the same problem on my website
I found every index.asp or index.aspx pages was infested by the code in the first post. I have removed the code but Google is telling mne there is a malware. Perhaps occur some days to back to the orihginal status.
I have found the problem. It is by steal your password in FTP client(I use Filezilla) so a post that explain in detailed manner this is here
[edit reason] removed links to protect others from potential malware [/edit]
[edited by: engine at 3:36 pm (utc) on Jun 27, 2012]