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Next: Analyzing the Scenarios Up: Scenarios Previous: Scenario 6: Hidden Data

Scenario 7: Online EXIFs.

Felicity downloads 10,000 JPEGs from a social network website. By examining the camera serial numbers in the images he is able to determine which images were shot by the same camera. She then shows that he can reconstruct the ``friends'' networks--and shows which pseudonyms are sharing the same camera, indicating that they might be living together or might be the same person.

Simson L. Garfinkel 2008-03-21