There are dozens and dozens of complaints from Google AdSense publishers or rogue Google AdSense ads forcing users from their web site to a spam web site - virtually hijacking their users through weird JavaScript redirects powered by Google AdSense ads servers.
There are many complaints but the largest thread with complaints is at the Google AdSense Help forums, where conversation started on January 4th, showing how users were being taken from the publisher site and automatically being redirected to lemode-mgz.com. There was no malware or hack on the site, it was the ad pushed through by Google AdSense servers that enabled the hijacking.
Here is a picture documented by this publisher:
Google reportedly told the publisher:
Thanks for sending us this information. I've forwarded it to the AdWords malvertising team for their ongoing investigation. At this point, the redirect issue is known and our engineers are currently working on a fix as we speak. It appears to be one source that is changing destination URLs. Hopefully a permanent fix should be delivered today or ASAP.
Now, they may have fixed that one ad, but it still continues to be a problem for publishers. The thread has continued on to today, 8 pages deep, with complaints.
Google has not responded in the thread itself, so there has been no confirmation from Google officially on this topic as of yet.
Forum discussion at Google AdSense Help.
Update: Google confirmed and said they resolved this issue.
