Thanks
Got the same problem on serval sites. Seems that Google Safe Browsing have listed this issue dangerous.
Btw tried to delete it. Not good :) It will turn of the whole site. Uploaded a new fresh html-helper.class.php from Envato. Maleware still there so it looks like http://www.link.at are not trusted by Google Safe Browsing.
Hi Andy,
just tested to activate Twenty fifthteen as the default theme at my WordPress site. And the the promblem also occurs with that theme.
So you right it’s not a theme issue.
I’ll try to reinstall the WordPress core files.
Have you any other suggestions as to what that is?