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In the paper we discuss how a single node communication interface failure in a time-triggered system can be used to model a DoS-type attack. More so, we present a design approach based on active detection of common DoS characteristics, which can serve as a template for attack detection. This approach is feasible in time-triggered systems because of the periodic and deterministic characteristics either at the fieldbus communication or application level. We support our discussion with an example case study of a vehicle braking system implementing time-triggered messages disturbed by fault injection.

The paper discusses application of Accelerated Processing Units (APU) in safety analysis and design of safety-critical systems. Specifically, a dependability simulation technique called software fault injection is discussed in the context of APU application to respective injection algorithms. We discuss parallel fault seeding techniques that can be used to expand and speed-up the fault space exploration. These techniques are presented in the context of a case-study of an Anti-Lock Braking System.