Hackers have successfully hijacked GoogleAdWords and so was admitted by Google as well.This allowed cyber criminals to use affected links to redirect users to web sites that contained malicious software. Google immediately took action and shut down the offending links once they were discovered early last week.

There were at least 20 specific search terms that appeared as legitimate ads which redirected users to smartattack.org which had malicious codes in the site.

This flaw was discovered by Exploit Prevention Labs. It seems that only Win Xp users have been affected by this flaw.