Introduction

“A book about online privacy? That’ll be pretty short!” my friend joked. It was his way of saying, “We both know there’s no such thing as privacy on the internet.”

He’s not far from the truth, but to be fair, the illusion of privacy extends far beyond the world of computers and networks.

If you want complete privacy, go live in a remote cave without any electronics. Don’t build a fire, because the smoke could give away your location. Never step outside, because a satellite or a passing drone might snap your picture. And avoid all human contact, because you never know who might be a spy. I hope you packed plenty of food, water, and clothing, too—you won’t be getting any more!

In other words, there’s essentially no such thing as total ...

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