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Monday, 24th August 2009

Online social networks leak personal information to tracking sites, new study shows

From the News Release:

More than a half billion people use online social networks, posting vast amounts of information about themselves to share with online friends and colleagues. A new study co-authored by a researcher at Worcester Polytechnic Institute (WPI) has found that the practices of many popular social networking sites typically make that personal information available to companies that track Web users' browsing habits and allow them to link anonymous browsing habits to specific people. The study, presented recently in Barcelona at the Workshop on Online Social Networks, part of the annual conference of the Association for Computing Machinery's Special Interest Group on Data Communications, is the first to describe a mechanism that tracking sites could use to directly link browsing habits to specific individuals.

"When you sign up with a social networking site, you are assigned a unique identifier," says Craig Wills, professor of computer science at WPI, who conducted the study with an industry colleague. "This is a string of numbers or characters that points to your profile. We found that when social networking sites pass information to tracking sites about your activities, they often include this unique identifier. So now a tracking site not only has a profile of your Web browsing activities, it can link that profile to the personal information you post on the social networking site. Now your browsing profile is not just of somebody, it is of you."

See Also: Read the Complete Study (PDF)

Source: EurekAlert


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