Search giant Google is known for its "do no evil" approach. It goes to great lengths to protect the environment and it blocks sites on lists of known malware sites from being searched.
However, security researchers made an alarming discovery of a major slip-up for Google. The site had allowed a known malware site to buy text ads and was placing these ads on its partner pages through its Google AdWords service. The link was listed as “Antivirus XP 2008,” which led to the URL “antivirus-world-2009.com.” (Don't go there)
Why does this sound a bit familiar? Well, "Antivirus XP 2008" happens to be the name of one of the most obnoxious malware to be developed in the last year. The very widespread virus hides itself in users systems. It pops up to warn them annoyingly with a fake antivirus dialog that their computer is infected with all sorts of bad things and the end may well be nigh -- or so it says. The whole thing is really a scam, to try to get people to upgrade to an equally fake "pro edition".
Getting rid of the virus is even more of a pain, as it does have one thing in common with antivirus software -- it regularly connects to the internet and updates itself. However, unlike AV software, it updates itself to better evade virus scans.
While those familiar with computer security may spot the name instantly, the legitimate sounding Google link likely fooled many users. The oversight is particularly impressive, considering the malware was listed under its own well known name.
See also: How to remove Antivirus XP 2008