Now this is another interesting attack vector using little bits of data not many people consider. I have heard about this kind of technique before and considered how it’d be done myself.
Finally someone has put together a public version of a tool that can tell you how unique your browser footprint is. As for me I’m using a fairly standard Firefox install with a couple of plugins – but still Panopticlick tells me “Your browser fingerprint appears to be unique among the 764,828 tested so far”.
The people behind it are the EFF or Electronic Frontier Foundation.

