Enlisting ISPs to Improve Online Privacy: IP Address Mixing by Default

Authors:
Barath Raghavan;Tadayoshi Kohno;Alex C. Snoeren;David Wetherall
Affiliations:
University of California, San Diego and University of Washington,;University of California, San Diego and University of Washington,;University of California, San Diego and University of Washington,;University of California, San Diego and University of Washington,
Venue:
PETS '09 Proceedings of the 9th International Symposium on Privacy Enhancing Technologies
Year:
2009

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Abstract

Today's Internet architecture makes no deliberate attempt to provide identity privacy--IP addresses are, for example, often static and the consistent use of a single IP address can leak private information to a remote party. Existing approaches for rectifying this situation and improving identity privacy fall into one of two broad classes: (1) building a privacy-enhancing overlay layer (like Tor) that can run on top of the existing Internet or (2) research into principled but often fundamentally different new architectures. We suggest a middle-ground: enlisting ISPs to assist in improving the identity privacy of users in a manner compatible with the existing Internet architecture, ISP best practices, and potential legal requirements.