Daily Archives: 24 April, 2012

Visitor Tracking Without Cookies (or How To Abuse HTTP 301s)

Written April 24th, 2012
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British Telecom's implementation of the new cookie laws. Curiously, if you visit their site using the Opera web browser, it assumes that you've given consent, even if you click the button to not do so.

A technique for abusing HTTP 301 redirects and random numbers to uniquely track users; even those who have cookies disabled in their web browsers. Continue reading →