A browser flaw lets Web sites track you

'Interclick...says its code was responsible for the tracking'

[Hoople]

"...The technique the University of California, San Diego researchers investigated is called “‘history sniffing" and is a result of the way browsers interact with Web sites and record where they’ve been. A few lines of programming code are all a site needs to do that..."
[bostonherald.com ]

The article goes on to mention that recent versions of Safari and Google Chrome have this security loophole fixed.

[Mark_A]

I am assuming this either reads history or cookies.

I have always thought it could be easy to request cookies from many sites not just your own to guage browsing history. Most people's computers have a mine of information in their cookies.