@phdthesis{Engler_2007, title = {Fundamental Models and Algorithms for a Distributed Reputation System}, author = {Michael Engler}, month = {December}, school = {University of Stuttgart}, year = 2007, url = {http://elib.uni-stuttgart.de/opus/volltexte/2008/3401/}, abstract = {With the increased significance of the Internet in our everyday lifes, we embrace its benefits as seemingly unlimited information source, warehouse and general communication medium, but sometimes fall prey to its predators. Outside the online world, social network structures of friends or colleagues allow to identify malicious and reputable entities and to communicate recommendations or warnings accordingly. When interacting through open computer networks, these traditional mechanisms used in the physical world for establishing trust are adapted by reputation systems that allow to build trust in entities and create social network structures on a much larger scale. In this dissertation, we investigate various models and algorithms required for realizing a fully decentralized reputation system with enhanced privacy properties and fine-grained trust modeling. To ensure the former, we bind trust to virtual identities instead of real identities and present extended destination routing, an approach that allows anonymous communication between pseudonyms without exposing any link to a real identity. To enable the latter, we introduce a generic trust model that allows to model trust in various context areas in addition to expressing context area dependencies that are taken into account when updating trust. The model definition permits incorporating several well-known trust update algorithms from the related work. Subjecting the algorithms to a set of evaluation scenarios gives valuable inputs regarding their specific performance. In order to capture the transitivity of trust, we present algorithms to simplify trust networks and then compute the transitive trust with subjective logic operators. Finally, we propose mechanisms to protect trust by firstly laying its foundation in trusted hardware and secondly ensuring the authenticity of recommendations through the integration of an originality statement. This reputation system can be utilized by users and relying applications alike to determine the trustworthiness of other entities. While these building blocks are all essential for our system, many contributions can be applied to other reputation systems and even to other research areas as well.}, biburl = {http://www.bibsonomy.org/bibtex/221835bc381dc3c4b308b42909d642b17/dawinci}, keywords = {systems protection models model trust reputation privacy distributed recommendation algorithms} } @article{Sol_2007b, title = {'I've Got Nothing to Hide' and Other Misunderstandings of Privacy}, author = {Daniel J. Solove}, journal = {San Diego Law Review}, pages = {745 pp.}, volume = 44, year = 2007, url = {http://ssrn.com/paper=998565}, biburl = {http://www.bibsonomy.org/bibtex/2ecf194247babbdde92b9c492fe5a9a73/dawinci}, keywords = {protection identity privacy web wide world} } @article{Sol_Hoo_2006, title = {A Model Regime of Privacy Protection}, author = {Daniel J. Solove and Chris J. Hoofnagle}, edition = {Version 3.0}, journal = {GWU Law School Public Law Research Paper}, number = 132, series = {Accepted Paper Series}, year = 2006, url = {http://ssrn.com/paper=881294}, abstract = { A series of major security breaches at companies with sensitive personal information has sparked significant attention to the problems with privacy protection in the United States. Currently, the privacy protections in the United States are riddled with gaps and weak spots. Although most industrialized nations have comprehensive data protection laws, the United States has maintained a sectoral approach where certain industries are covered and others are not. In particular, emerging companies known as "commercial data brokers" have frequently slipped through the cracks of U.S. privacy law. In this article, the authors propose a Model Privacy Regime to address the problems in the privacy protection in the United States, with a particular focus on commercial data brokers. Since the United States is unlikely to shift radically from its sectoral approach to a comprehensive data protection regime, the Model Regime aims to patch up the holes in existing privacy regulation and improve and extend it. In other words, the goal of the Model Regime is to build upon the existing foundation of U.S. privacy law, not to propose an alternative foundation. The authors believe that the sectoral approach in the United States can be improved by applying the Fair Information Practices - principles that require the entities that collect personal data to extend certain rights to data subjects. The Fair Information Practices are very general principles, and they are often spoken about in a rather abstract manner. In contrast, the Model Regime demonstrates specific ways that they can be incorporated into privacy regulation in the United States. }, biburl = {http://www.bibsonomy.org/bibtex/20b6a371b297f128b6ffd9ca18f6760ab/dawinci}, keywords = {theft protection identity databases regulation privacy legislation databrokers} }