Title
A Privacy Analysis Of Cross-Device Tracking
Abstract
Online tracking is evolving from browser- and device tracking to people-tracking. As users are increasingly accessing the Internet from multiple devices this new paradigm of tracking in most cases for purposes of advertising is aimed at crossing the boundary between a user's individual devices and browsers. It establishes a person-centric view of a user across devices and seeks to combine the input from various data sources into an individual and comprehensive user profile. By its very nature such cross-device tracking can principally reveal a complete picture of a person and, thus, become more privacy-invasive than the siloed tracking via HTTP cookies or other traditional and more limited tracking mechanisms In this study we are exploring cross-device tracking techniques as well as their privacy implications.Particularly, we demonstrate a method to detect the occurrence of cross-device tracking, and, based on a cross-device tracking dataset that we collected from 126 Internet users, we explore the prevalence of cross-device trackers on mobile and desktop devices. We show that the similarity of IP addresses and Internet history for a user's devices gives rise to a matching rate of F-1 = 0.91 for connecting a mobile to a desktop device in our dataset. This finding is especially noteworthy in light of the increase in learning power that cross-device companies may achieve by leveraging user data from more than one device. Given these privacy implications of cross-device tracking we also examine compliance with applicable self-regulation for 40 cross-device companies and find that some are not transparent about their practices.
Year
Venue
Field
2017
PROCEEDINGS OF THE 26TH USENIX SECURITY SYMPOSIUM (USENIX SECURITY '17)
Internet privacy,Computer security,Computer science,Cross device,Privacy analysis
DocType
Citations 
PageRank 
Conference
7
0.48
References 
Authors
0
5
Name
Order
Citations
PageRank
Sebastian Zimmeck1675.45
Jie S. Li270.48
Hyungtae Kim370.82
Steven M. Bellovin42312276.72
Tony Jebara52078196.32