A quantitative assessment of security risks based on a multifaceted classification approach

Information systems and cloud computing infrastructures are frequently exposed to various types of threats. Without detection and prevention mechanisms, the threats can materialize and cause different types of damages that usually lead to significant financial losses. The threats arise from a complex and multifaceted environment. Currently, organizations are struggling to identify the threats to their information assets and assess the overall damage they might inflict to their systems. In order to empower mangers to better plan for shielding their information systems, the paper presents two main contributions. First, a new approach to threat classification that leads to a security assessment model that is systematic, extendable, and modular. Second, a quantitative analysis of information systems based on the model.