To maintain the privacy of individual users' personal data, a growing number of researchers propose storing user data in client computers or personal data stores in the cloud, and allowing users to tightly control the release of that data. While this allows specific applications to use certain approved user data, it precludes broad statistical analysis of… (More)
Web-based enterprises process events generated by millions of users interacting with their websites. Rich statistical data distilled from combining such interactions in near real-time generates enormous business value. In this paper, we describe the architecture of Photon, a geographically distributed system for joining multiple continuously flowing streams… (More)
Online advertising is a major economic force in the Inter-net today. Today's deployments, however, erode privacy and degrade performance as browsers wait for ad networks to deliver ads. In this paper we pose the question: is it possible to build a practical private online advertising sys-tem? To this end we present an initial design where ads are served… (More)
Online tracking of users in support of behavioral advertising is widespread. Several researchers have proposed non-tracking online advertising systems that go well beyond the requirements of the Do-Not-Track initiative launched by the US Federal Trace Commission (FTC). The primary goal of these systems is to allow for behaviorally targeted advertising… (More)
This technical report describes an architecture and protocols for personalized online advertising system called Privad that is far more private than current systems exemplified by Google and Facebook. This report also provides an analysis of the privacy characteristics of Privad.
There are a number of designs for an online advertising system that allow for behavioral targeting without revealing user online behavior or user interest profiles to the ad network. However, none of the proposed designs have been deployed in real-life settings. We present an effort to fill this gap by building and evaluating a fully functional prototype of… (More)
Several recent research projects have designed systems that address the problem of user privacy in online advertising systems. The primary goal of these systems is to allow for targeted advertising without revealing user profiles to the ad network. None of these designs, however, adequately consider the role of the auction. This paper looks at the problem… (More)
Hereby I confirm that this thesis is my own work and that I have documented all sources used. Herewith I agree that my thesis will be made available through the library of the Computer Science Department. I hereby confirm the congruence of the contents of the printed data and the electronic version of the thesis. Acknowledgements I would like to express my… (More)