Date Added: Apr 2013
Many security incidents have been reported in enterprise systems and personal computers, such as the denial-of-service attack via computer viruses and the data leak caused by unauthorized accesses. This paper proposes a quantitative security evaluation for software system from the vulnerability data consisting of discovery date, solution date and exploit publish date based on a stochastic model. More precisely, the authors' model considers a vulnerability life-cycle model and represents the vulnerability discovery process as a non-homogeneous Poisson process. In a numerical example, they show the quantitative measures for contents management system of an open source project.