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Enhancing Web Privacy through Policies and Trust. Pranam Kolari. Work with Anupam Joshi, Tim Finin, Li Ding, Shashidhara Ganjugunte, Lalana Kagal. Motivation. compliant. Non-compliant. Trust website policies. Distrust website policies. W3C specified P3P Architecture. P3P Compliance.

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Enhancing Web Privacy through Policies and Trust

Pranam Kolari

Work with Anupam Joshi, Tim Finin, Li Ding, Shashidhara Ganjugunte, Lalana Kagal

Motivation

compliant

Non-compliant

Trust website policies

Distrust website policies

W3C specified P3P Architecture

P3P Compliance

Consumer Confidence

  • Rei Policy Language
  • Improved modeling of users privacy preferences
  • Through grounding in the Semantic Web provides strong semantics and extensibility
  • Rei policy language based on deontic concepts can additionally model obligations and dispensation

Website Evaluation Ontology

www.slashdot.org

serviceType

popularity

DiscussionGroup

9

hasP3P

owner

URI

OSDN

  • Trust
  • Improved modeling of a users trust preferences for privacy
  • Design of a website evaluation ontology
  • A social network for exchange and evolution of trust with websites
  • Use of FOAF and other existing networks for knowledge sharing

isBasedOutOf

hasPrivacyCertifier

USA

--

hasTextPolicy

subDomainOf

URI

--

policySimilarTo

lawEnforcedBy

OSDN

Yes

US

hasPolicyEnforcement

  • Key Points
  • Web Sites optionally publish P3P policies
  • Clients specify privacy preferences using a policy language, for instance Rei
  • Privacy Expert is the privacy enhancement enabler by binding together entities of the system
  • Rei Engine evaluates policies of users against website attributes
  • Website Recommender Network propagates and builds a model of websites based on reputation
  • FOAF – Enables the creation of the website recommender network

publish (optionally)

Website

Recommender

Network

Web Server

P3P Policy

Ontologies, Trust rules

Personal agents

XSLT Transformer

Rei Engine

Privacy Expert

Intelligent Privacy Proxy*

FOAF

Rei Privacy Policy

(RDF based, enhancements

over APPEL)

Trusted Agent

Network#

Clients

publish

# FOAF, Golbeck, Li ideas of Trust

Credits: P3P Dashboard from Ernst and Young

P3P Architecture from W3C

http://ebiquity.umbc.edu

Work partially supported by NSF award ITR-IIS-0325172