Browsing by Author "Balbis, Abel"
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Item Safety and Security Interference Analysis in the Design Stage(Springer, 2020-09-15) Martinez, Jabier; Godot, Jean; Ruiz, Alejandra; Balbis, Abel; Ruiz Nolasco, RicardoSafety and security engineering have been traditionally separated disciplines (e.g., different required knowledge and skills, terminology, standards and life-cycles) and operated in quasi-silos of knowledge and practices. However, the co-engineering of these two critical qualities of a system is being largely investigated as it promises the removal of redundant work and the detection of trade-offs in early stages of the product development life-cycle. In this work, we enrich an existing safety-security co-analysis method in the design stage providing capabilities for interference analysis. Reports on interference analyses are crucial to trigger co-engineering meetings leading to the trade-offs analyses and system refinements. We detail our automatic approach for this interference analysis, performed through fault trees generated from safety and security local analyses. We evaluate and discuss our approach from the perspective of two industrial case studies on the space and medical domains.Item Will safety-security co-engineering pay off? A quality and cost perspective in two case studies(Institute of Electrical and Electronics Engineers Inc., 2021) Urretavizcaya, Imanol; Martinez, Jabier; Satriani, Giuseppe; Ruiz, Alejandra; Nolasco, Ricardo Ruiz; Gonzalez, Antonio; Moreno, Isaac; Balbis, AbelSafety and Security concerns are usually interlinked while building critical software-intensive systems of systems. Several efforts try to approach both domains of expertise to increase the overall reliability of the systems and reduce costs by an earlier detection of issues and trade-offs. Despite the growing number of co-engineering practices at different life-cycle stages, there is a lack on business justifications such as economic costs of their adoption. We report on using a cost model to evaluate the convenience (or not) of adopting co-engineering practices in two industrial case studies (space and medical devices). Simulation results with the collected data suggest an improvement in quality if any of the selected co-engineering practices are integrated while cost increases in one case but reduces in the other. We discuss the results but, as they cannot be generalized, the main contribution is on proposing the cost model for answering the title’s question.