Yesterday Google by Webmaster Tools send me alert. It said:
Malware code injection
Suspicious snippet:
<iframe src="http://pererrationhouyhnhnm.comicalcurriculum.net/player-hissing-skews-articulately/708758093631444445" width="423" height="526">
I searched in source of my site's that page - nothing, can't find this iframe. Installed Sucuri Security - it said that site is clean. I send request to Google to recheck my site and get answer from them, that my site still has this malware and this iframe...
What can I do?