<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Speaker: Balachander Krishnamurthy, AT&T Labs--Research<br>Title: On the Internet Someone Knows You Are a Dog<br>Date/time: 4:30pm Wed Oct 7 (tea at 4pm in tea room)<br>Location: CS 105 (small auditorium)<br><br>Abstract:<br> We have been examining the leakage of privacy on the Internet:<br> how information related to individual users is aggregated as they<br> browse seemingly unrelated Web sites. Thousands of Web sites across<br> numerous categories, countries, and languages are studied to generate<br> a "privacy footprint". I report on a longitudal study consisting of<br> multiple snapshots of examination of such diffusion over five years.<br> I'll talk about the technical ways by which third-party aggregators<br> acquire data, the depth of user-related information acquired, the<br> techniques for protecting privacy diffusion and limitations of such<br> techniques. Such increasing aggregation of user-related data is carried<br> out by a steadily decreasing number of entities: a handful are able to track<br> users' movement across almost all of the popular web sites. Virtually all<br> the protection techniques have significant limitations highlighting the<br> seriousness of the problem and the need for alternate solutions.<br><br> I will also talk about a recent discovery of large-scale leakage of<br> personally identifiable information (PII) via Online Social Networks (OSN).<br> Third-parties can link PII with user actions both within OSN sites and<br> elsewhere on non-OSN sites.<br><br><a href="http://www.cs.princeton.edu/events/event/219">http://www.cs.princeton.edu/events/event/219</a></body></html>