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On Social Networks, You Are Who You Know
santosh maharshi writes "On social networks like Facebook, even if you have kept your profile very private, people can just look at your friends list and infer lots of vital information about you. Most of the social networks like Facebook and LinkedIn allow people to see your picture and your friends list as part of the open access for visitors (the article says that only 5% of Facebook users have bothered to hide their friends list). In a study titled You Are Who You Know: Inferring User Profiles in Online Social Networks (PDF), conducted by Alan Mislove of Northeastern University and his colleagues at the Max Planck Institute for Software Systems, an algorithm was tested that can accurately infer the personal attributes of Facebook users simply by looking at their friend lists. 'At Rice [University], the algorithm accurately predicted the correct dormitory, graduation year, and area of study for the many of the students. In fact, among these undergraduates, researchers found that “with as little as 20 percent of the users providing attributes we can often infer the attributes for the remaining users with over 80 percent accuracy."'"
Guess I'm nobody, since I have no facebook account LOL
But yeah, people shouldn't be surprised that publicly documenting every facet of your life results in less privacy, for you, and for everyone you know.
An operating system should be like a light switch... simple, effective, easy to use, and designed for everyone.
While the study proves a fairly obvious hypothesis, what your social network could say about you could go a lot deeper than that. It's not much of a leap to determine religion, politics, sexual orientation or various other things that people don't fully consider, or could even be used to violate equal opportunity housing or hiring laws. I think there are a lot of great things about social networking, and facebook in particular, but the how it's changing cultural views and expectations of privacy is shocking and fast, and I don't think we'll have perspective on whats happening for years to come.