Thursday, 12 March 2015

Here go our friends again, costing us privacy…

Bruce Schneier reports on research that geotags Twitter users by mining their social graphs.

The method seems pretty successful:

Leave-many-out evaluation shows that our method is able to infer location for 101,846,236 Twitter users at a median error of 6.38 km, allowing us to geotag over 80% of public tweets.

Lots of tweets were accurately tagged to within 1km.

It’s getting harder to not reveal private information about our friends by accident.

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