Google AdSense Click Fraud Made Possible By Uncloaking Advertisers' Sites

An anonymous reader writes: A Spanish researcher claims to have uncovered a vulnerability in the security procedures of Google's AdSense program which would allow a third party to manipulate clicks on Google's syndicated ad service by 'de-cloaking' the obfuscated advertiser URLs that Google AdSense placements provide as links. He has also provided downloadable PHP files to show the exploit in action.