On the uniqueness of Web browsing history patterns
Annales des Télécommunications(2013)
摘要
We present the results of the first large-scale study of the uniqueness of Web browsing histories, gathered from a total of 368,284 Internet users who visited a history detection demonstration website. Our results show that for a majority of users (69 %), the browsing history is unique and that users for whom we could detect at least four visited websites were uniquely identified by their histories in 97 % of cases. We observe a significant rate of stability in browser history fingerprints: for repeat visitors, 38 % of fingerprints are identical over time, and differing ones were correlated with original history contents, indicating static browsing preferences (for history subvectors of size 50). We report a striking result that it is enough to test for a small number of pages in order to both enumerate users’ interests and perform an efficient and unique behavioral fingerprint; we show that testing 50 Web pages is enough to fingerprint 42 % of users in our database, increasing to 70 % with 500 Web pages.
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关键词
Privacy, Web history, Fingerprinting
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