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Privacy-Preserving Social Plugins

Authors: 

Georgios Kontaxis, Michalis Polychronakis, and Angelos D. Keromytis, Columbia University; Evangelos P. Markatos, FORTH-ICS

Abstract: 

The widespread adoption of social plugins, such as Facebook’s Like and Google’s +1 buttons, has raised concerns about their implications to user privacy, as they enable social networking services to track a growing part of their members’ browsing activity. Existing mitigations in the form of browser extensions can prevent social plugins from tracking user visits, but inevitably disable any kind of content personalization, ruining the user experience.

In this paper we propose a novel design for privacy-preserving social plugins that decouples the retrieval of user-specific content from the loading of a social plugin. In contrast to existing solutions, this design preserves the functionality of existing social plugins by delivering the same personalized content, while it protects user privacy by avoiding the transmission of user-identifying information at load time. We have implemented our design in SafeButton, an add-on for Firefox that fully supports seven out of the nine social plugins currently provided by Facebook, including the Like button, and partially due to API restrictions the other two. As privacy-preserving social plugins maintain the functionality of existing social plugins, we envisage that they could be adopted by social networking services themselves for the benefit of their members. To that end, we also present a pure JavaScript design that can be offered transparently as a service without the need to install any browser add-ons.

Georgios Kontaxis, Columbia University

Michalis Polychronakis, Columbia University

Angelos D. Keromytis, Columbia University

Evangelos P. Markatos, FORTH-ICS

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BibTeX
@inproceedings {180241,
author = {Georgios Kontaxis and Michalis Polychronakis and Angelos D. Keromytis and Evangelos P. Markatos},
title = {{Privacy-Preserving} Social Plugins},
booktitle = {21st USENIX Security Symposium (USENIX Security 12)},
year = {2012},
isbn = {978-931971-95-9},
address = {Bellevue, WA},
pages = {631--646},
url = {https://www.usenix.org/conference/usenixsecurity12/technical-sessions/presentation/kontaxis},
publisher = {USENIX Association},
month = aug,
}
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