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Computer Science > Cryptography and Security

arXiv:2203.08946 (cs)
[Submitted on 16 Mar 2022]

Title:One Bad Apple Can Spoil Your IPv6 Privacy

Authors:Said Jawad Saidi, Oliver Gasser, Georgios Smaragdakis
View a PDF of the paper titled One Bad Apple Can Spoil Your IPv6
Privacy, by Said Jawad Saidi and 2 other authors
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    Abstract:IPv6 is being more and more adopted, in part to
    facilitate the millions of smart devices that have already been
    installed at home. Unfortunately, we find that the privacy of a
    substantial fraction of end-users is still at risk, despite the
    efforts by ISPs and electronic vendors to improve end-user
    security, e.g., by adopting prefix rotation and IPv6 privacy
    extensions. By analyzing passive data from a large ISP, we find
    that around 19% of end-users' privacy can be at risk. When we
    investigate the root causes, we notice that a single device at
    home that encodes its MAC address into the IPv6 address can be
    utilized as a tracking identifier for the entire end-user prefix
    -- even if other devices use IPv6 privacy extensions. Our results
    show that IoT devices contribute the most to this privacy leakage
    and, to a lesser extent, personal computers and mobile devices.
    To our surprise, some of the most popular IoT manufacturers have
    not yet adopted privacy extensions that could otherwise mitigate
    this privacy risk. Finally, we show that third-party providers,
    e.g., hypergiants, can track up to 17% of subscriber lines in our
    study.

Comments: Accepted at ACM SIGCOMM Computer Communication Review, to
          appear in the April 2022 issue
Subjects: Cryptography and Security (cs.CR); Networking and Internet
          Architecture (cs.NI)
Cite as:  arXiv:2203.08946 [cs.CR]
          (or arXiv:2203.08946v1 [cs.CR] for this version)
          https://doi.org/10.48550/arXiv.2203.08946
          Focus to learn more
          arXiv-issued DOI via DataCite

Submission history

From: Oliver Gasser [view email]
[v1] Wed, 16 Mar 2022 21:13:57 UTC (399 KB)
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