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Foursquare Privacy Hole Exposed By Hacker

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If you have checked in with Foursquare in San Francisco in the last three weeks, Jesper Andersen probably knows where and when -- even if you've set your check-ins to be published to friends only.

Andersen, a coder who recently built a service called Avoidr that helps you avoid social network "friends" you don't really like, figured out that Foursquare had a privacy leak because of how it published user check-ins on web pages for each location.

Read the whole story at wired.com

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