Policykeeper: Recommending Proper Security Mechanisms Based on the Severity of Vulnerability Considering User Experience

The current statistics of vulnerability indicates that the security mechanisms become more important to protect the security of operating system than before. The security mechanism is regarded as an effective method of defence. However it is a great challenge to balance the security assurance and the user experience. In this paper, we propose the Policy keeper, which is a method of recommending the security mechanisms based on the severity of vulnerability, referencing the Common Vulnerability Scoring System (CVSS), considering the user experience. An algorithm is designed to transform the adaptability of a security mechanism into the numeric values which are easy to calculate and mine. The prototype is implemented. The experiment results show that Policy keeper can effectively balance the strength of security mechanisms and the user experience, recommend the appropriate security mechanisms to the operating systems.