Evaluation of a Security and Privacy Requirements Methodology Using the Physics of Notation

Security and Privacy Requirements Methodologies are considered an important part of the development process of systems, especially for the ones that contain and process a large amount of critical information and inevitably needs to remain secure and thus, ensuring privacy. These methodologies provide techniques, methods, and norms for tackling security and privacy issues in Information Systems. In this process, the utilisation of effective, clear and understandable modelling languages with sufficient notation is of utmost importance, since the produced models are used not only among IT experts or among security specialists, but also for communication among various stakeholders, in business environments or among novices in an academic environment. This paper evaluates the effectiveness of a Security and Privacy Requirements Engineering methodology, namely Secure Tropos on the nine principles of the Theory of Notation. Our qualitative analysis revealed a partial satisfaction of these principles.