I’ve written an article for the September issue of Scientific American magazine called The End of Privacy? The article is available online here, with a slightly different title: Do Social Networks Bring the End of Privacy?.
The entire issue is devoted to privacy, and there are some other really interesting articles. Here are links to the other articles in the issue:
Whitfield Diffie and Susan Landau, Internet Eavesdropping: A Brave New World of Wiretapping
Steven Ashley, Digital Surveillance: Tools of the Spy Trade
Katherine Albrecht, How RFID Tags Could Be Used to Track Unsuspecting People
Anil K. Jain and Sharath Pankanti, Beyond Fingerprinting: Is Biometrics the Best Bet for Fighting Identity Theft?
Mark A. Rothstein, Tougher Laws Needed to Protect Your Genetic Privacy
Simson L. Garfinkel, Data Fusion: The Ups and Downs of All-Encompassing Digital Profiles
Peter Brown, Privacy in an Age of Terabytes and Terror
Esther Dyson, How Loss of Privacy May Mean Loss of Security
Anna Lysyanskaya, Cryptography: How to Keep Your Secrets Safe