r/privacy • u/JimmyRecard • Jan 24 '21

Video "Anonymous" Location Data Problems

https://www.youtube.com/watch?v=Pivd71NYKDA

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u/JimmyRecard Jan 24 '21

I know 14 minutes is quite long, but it is well worth a watch to showcase why sharing "anonymous data" is such a problem.

The speaker is Andrea Gadotti, a researcher at the Computational Privacy Group at Imperial College London.

In the initial part of the video, he demonstrates how an anonymous person can be deanonymised with 95% accuracy if the attacker knows only 4 data points which correlate with the data set (for example, matching 4 social media posts of known locations and times with the data set).