Abstract
Web users are increasingly becoming conscious about the personally identifiable information (PII) being collected and used by Web service providers. Users of these services are usually asked by the service providers to reveal their PII in order to access the services provided by them. While collecting this PII, the service providers must ensure their customers that the PII provided by them must be handled according to the privacy policies and laws. Currently, the enforcement of privacy policies and laws is done manually. This process is error prone and can leak information to the third parties which the information provider has never imagined. The automation of privacy policy enforcement is a must for Web service providers to deal with the privacy handling issue. This paper is an effort towards how to automate the privacy policy enforcement along with traditional authorization policies followed in legacy access control systems. As trust plays an important role in human life and we constantly update and upgrade our trust relationships with other people based on our outlooks in response to the changing situations, the dynamic nature of heterogeneous Web services collaboration is handled through a trust-based access control mechanism.
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