Digital Twin and Digital Thread for System Security and Performance applied to an Electrical Vehicle Charging Use Case

System security requires a solid foundation in both development and operation. During development, performance trade-offs result in security infrastructures that are more or less effective, but usually imperfect. Hence, during operation, runtime monitoring and anomaly detection continuously check for security issues.In this paper, we show how development and operation can be linked. We demonstrate how information and data from development and operation can be aggregated in a digital twin and/or digital thread which is used as the basis for runtime monitoring and anomaly detection. In particular, we address the trade-off between system security and performance in a concrete smart grid system.