Social networking sites have been under attack lately. In February, Facebook made a very controversial change to its privacy policy - this change resulted in a massive backlash. Twitter has been the victim of several high profile attacks. In their 2009 Midyear Security Report, Cisco cited social networking as one of the major vulnerabilities in the first half of 2009. Our blog has covered many stories about how criminals use social networking sites (like Facebook, Twitter, LinkedIn, and others) to spread malicious software and steal identities. However, we have not done an adequate job of talking about privacy (whatever that is) on these popular web services.
The social implications of privacy have been one of my favourite topics for several years. The first time I read George Orwell's beautiful 1984, I was struck by a strange dichotomy that I still have not resolved. True freedom lies in either having complete privacy or a complete lack of privacy (combined with a complete lack of judgement). However, advances in technology make a complete lack of privacy incredibly dangerous - crimes like identity theft, credit card fraud, etc are not so much financial attacks as they are attacks against privacy. And, as crimes like identity theft and credit card fraud become more common, people become more concerned with their privacy.