Replication: Why We Still Can't Browse in Peace On the Uniqueness and Reidentifiability
summary
Replication uses telemetry from 52,000 Firefox users over two weeks and 35 million site visits across ~660,000 domains and finds 48,919 distinct browsing profiles with 99% unique profiles overall and over 95% uniqueness even when truncated to the top 100 sites. Reidentification based on Jaccard overlap reaches ~50% using the top 10k sites for users with 50+ domains and rises to over 80% for users with 150+ domains. Analysis of observed network requests shows major third parties, including Alphabet and Facebook, have sufficient prevalence to reidentify many users.
AI-written summary · about
chapters (8)
- 0:00Intro
- 0:20Original Paper
- 0:32Background & Definitions
- 1:49Replication
- 2:35Extension
- 3:06Baseline reidentifiability
- 3:47Profile Size
- 4:33Third-parties
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