The Atlantic reports that as social media grows, "it's increasingly more accurate to think about privacy as a communal affair, something heavily contextual and owned, collectively, by networks." The report references a case study from Brazil's University of Minas Gerais that indicates "just how much tagged photos, in particular--and our connections' tagged photos--can actually reveal, and predict, about our identities." The study's authors note that "Users unintentionally put their friends or even their own privacy at risk when performing actions on social networking sites...the tagged user has no means to control the degree of exposure her pictures are getting, since the 'owner' is another user."
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