As the video shows, cyber criminals ran Google ads for legitimate, trusted organizations like The Better Business Bureau. When users clicked on the ads, they were redirected to a malicious web site that attempted to exploit a common security vulnerability in Internet Explorer. Users who hadn't installed Microsoft's latest security patches were infected with a so-called postlogger - malware that's designed to steal confidential account access information, in this case from customers of 100 different banks.
http://www.net-security.org/secworld.php?id=5089
