Modeling security aspects in safety environment

High product adaptivity and availability, flexibility, reliability and robustness, at reduced cost and time-to-market, result in an ever-increasing number of products and complexity containing embedded software for safety critical systems. These complexities, controlled and operated by inexperienced users will attract criminals. In this issue we describe a model approach for assessing the conditional probability of security failures - based on safety-intrusion - given the occurrence of reliability failures on safety-related systems like the 2004-Architecture.