The evolution of technology has led to the appearance of smart cities. An essential element in such cities is smart mobility that covers the subjects related to Intelligent Transportation Systems (ITS). The problem is that the ITS vulnerabilities may considerably harm the life quality and safety status of human beings living in smart cities. In fact, software and hardware systems are more exposed to security risks and threats. To reduce threats and secure software design, threat modelling has been proposed as a preventive solution in the software design phase. On the other hand, threat modelling is always criticised for being time consuming, complex, difficult, and error prone. The approach proposed in this study, that is, Automated Security Assistant of Threat Models (ASATM), is an automated solution that is capable of achieving a high level of security assurance. By defining concepts and conceptual modelling as well as implementing automated security assistant algorithms, ASATM introduces a new approach to identifying threats, extracting security requirements, and designing secure software. The proposed approach demonstrates a quantitative classification of security at three levels (insecure, secure, and threat), twelve sub‐levels (nominal scale and colour scale), and a five‐layer depth (human understandability and conditional probability). In this study, to evaluate the effectiveness of our approach, an example with various security parameters and scenarios was tested and the results confirmed the superiority of the proposed approach over the latest threat modelling approaches in terms of method, learning, and model understanding.
Today, 'security challenge' is considered a commonly-used catchword when it comes to emerging technologies such as the internet of things (IoT). Turning a blind eye to this challenge can sometimes lead to irreparable human and financial damage in everyday life. Threat modelling, despite being time consuming, complex, and error-prone, is still recognized as a preventative solution in the design phase. The method proposed in this paper, called automatic generation of threat paths, is suggested as an automated solution to the problem of identifying and determining potential threats. The proposed method is the improved and robust development of automated modelling and the introduction of the integration of new features (such as conditional probability and security) with the techniques of previous generations (such as Petri Nets (PNs)). The proposed method is evaluated using different security scenarios, and the results show that the proposed method outperforms other manual methods in this domain in terms of both time and cost (99.9% and 98.05%, respectively).
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