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MOSA (Modular Open System Approach) provides a framework for efficient and sustainable design of complex integrated systems. In domain of embedded technology, the MOSA as-is does a good job in identifying modular software and hardware frameworks required to establish a common baseline for generic open architecture. On the other hand, it does not cover physical aircraft integration, integration methodology and other constituent elements essential for design of robust interfaces and integrated embedded systems, which are owned by OEMs and their suppliers. The definition of open interfaces is a key constituent in definition of MOSA-compliant architectures. An efficient system integration lifecycle requires unambiguous interfacing among hosted functions. Open interfaces and Ethernet are core system integration technologies and should be integrated and configured with other software/hardware framework elements, to enable hard RT, real-time and soft-time application hosting.

Cybersecurity attacks exploit vulnerabilities related to the increased complexity and connectivity of critical infrastructure systems. This paper investigates the context and use of key security technologies, processes, challenges and use cases for the design of advanced integrated architectures with security, safety, and real-time performance considerations. In such architectures, deterministic Ethernet standards are used as a baseline for system integration in closed embedded systems or open mixed criticality systems. Security-informed safety development processes for integrated architectures are required to prevent catastrophic failures caused by environmental and cyber threats, due to expanding number of security vulnerabilities in complex and increasingly open systems. State-of-art safety/security processes for integrated systems in cross-industry environments are considered and similarities examined, for different types of integrated architectures.