Privacy online no longer exists and there is nothing at all you can do about it. In fact, everything you can try to do about it will just make it worse. While everyone and the media and their dog have all been screaming and shouting about privacy on Facebook, privacy and Google Street View and privacy on Blackberries and iPhones, the real battle has been going on very quietly in the background. The battle is now over, the war is over, the bad guys won and you have lost your privacy. All of it. And you never even noticed. Everything you do online is trackable. Everything, and it is happening now.

This post just summarizes what is going on. For the full details, listen to the Security Now podcast on “Side Channel Privacy Leaking” by Internet security expert Steve Gibson.

Your computer’s fingerprint is as unique as yours

This is made possible by what is called “computer fingerprinting” or “browser fingerprinting”. The idea is very simple: Your browser and computer have a  large number of characteristics that web pages need to know to be able to display the pages properly, and other characteristics that they don’t really need to know but that your computer shares anyway. Put all this information together, combine it with your computer’s clock time, your IP address range and a few other little items that are all freely available and it is generally possible to identify you with over 99% accuracy. None of these things can be switched off, any more than you can switch off your own fingerprints, height or eye color. Any changes you make to “protect” yourself will actually make it even easier to identify you, because it will make your computer even more easily identifiable.

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