Application of FMVEA by Design for Adding Smart Functionalities to an Existing Campervan

Due to the increasing use of software and information technologies in the industrial sector and for consumer goods, the engineering of these smart systems is becoming ever more challenging. Existing OT architectures need to be revised and OT security aspects need to be addressed. In order to address these challenges in a systematic way, the prior use of Model-Based Systems Engineering (MBSE) can create a holistic system description that satisfies all stakeholders and ensures seamless technological implementation. The Failure Modes, Vulnerabilities and Effect Analysis (FMVEA) can be used as a template for a vulnerability cause-effect chain analysis technique extended with security. This represents a unified model for security cause-effect analysis. While the classic Failure Mode & Effects Analysis (FMEA) is usually applied very late in the systems engineering process, we show that the FMVEA should ideally be used by Design to identify necessary components and functions for threat scenarios. As an example the FMVEA by Design technique is then applied to add smart functionalities to an existing campervan.