We have been examining the leakage of privacy on the Internet : how information related to individual users is aggregated as they browse seemingly unrelated Web sites. Thousands of Web sites across numerous categories, countries, and languages are studied to generate a "privacy footprint". Balachander will report on a longitudinal study consisting of multiple snapshots of examination of such diffusion over five years. He will talk about the technical ways by which third - party aggregators acquire data, the depth of user - related information acquired, the techniques for protecting privacy diffusion and limitations of such techniques. Such increasing aggregation of user - related data is carried out by a steadily decreasing number of entities : a handful are able to track users' movement across almost all of the popular Web sites. Virtually all the protection techniques have significant limitations highlighting the seriousness of the problem and the need for alternate solutions. He will also talk about a recent discovery of large - scale leakage of personally identifiable information (PII) via Online Social Networks (OSN). Third - parties can link PII with user actions both within OSN sites and elsewhere on non - OSN sites.
Balachander Krishnamurthy has been with AT&T Labs--Research since his PhD. His main focus of research of late is in the areas of Internet privacy, Online Social Networks, and Internet measurements. He has authored and edited ten books, published over 80 technical papers, holds twenty patents, and has given invited talks in over thirty countries.
He co-founded the successful Internet Measurement Conference and Steps to Reducing Unwanted Traffic on the Internet workshop. In 2008 he co-founded the ACM SIGCOMM Workshop on Online Social Networks. He has been on the thesis committee of several PhD students, collaborated with over seventy researchers worldwide, and given tutorials at several industrial sites and conferences.
His most recent book "Internet Measurements: Infrastructure, Traffic and Applications" (525pp, John Wiley & Sons, with Mark Crovella), was published in July 2006 and is the first book focusing on Internet Measurement. His previous book 'Web Protocols and Practice: HTTP/1.1, Networking Protocols, Caching, and Traffic Measurement' (672 pp, Addison-Wesley, with Jennifer Rexford) is the first in-depth book on the technology underlying the World Wide Web, and has been translated into Portuguese, Japanese, Russian, and Chinese.