May 18, 2008 to May 21, 2008
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/SP.2008.33
We present a new class of statistical de-anonymization attacks against high-dimensional micro-data, such as individual preferences, recommendations, transaction records and so on. Our techniques are robust to perturbation in the data and tolerate some mistakes in the adversary's background knowledge. We apply our de-anonymization methodology to the Netflix Prize dataset, which contains anonymous movie ratings of 500,000 subscribers of Netflix,the world's largest online movie rental service. We demonstrate that an adversary who knows only a little bit about an individual subscriber can easily identify this subscriber's record in the dataset. Using the Internet Movie Database as the source of background knowledge, we successfully identified the Netflix records of known users, uncovering their apparent political preferences and other potentially sensitive information.
Privacy, Anonymity, Attack
Arvind Narayanan, Vitaly Shmatikov, "Robust De-anonymization of Large Sparse Datasets", SP, 2008, 2012 IEEE Symposium on Security and Privacy, 2012 IEEE Symposium on Security and Privacy 2008, pp. 111-125, doi:10.1109/SP.2008.33