Usability Enhanced Privacy Protection System Based on Users´ Responses

Recently, the concern and significance about the privacy protection for Internet users are increased as many incidents of privacy violation have been occurred. Regarding the privacy problem, there are a few traditional privacy protection schemes. One of them is setting privacy policies of users´ private information. P3P, EPAL and XACML are famous examples of that kind of privacy protection methods which requires presetting of privacy policy. However, there are three problems. First, privacy policy setting is difficult to users who have no knowledge of privacy policy and how to use of the methods. Second, it is impossible to define the privacy policies considering all cases. Lastly, privacy policy setting without considering the privacy-related consequences may cause privacy violations. In this paper, we propose a usability enhanced privacy protection system based on users´ responses. The proposed system uses the users´ responses to measure and reflect their privacy preferences. Moreover, the system considers data sensitivities to notice the expected privacy- related consequences when users allow release of their sensitive personal information.