Security in Process: Visually Supported Triage Analysis in Industrial Process DataAnna-Pia Lohfink; Simon Duque Antón; Hans Dieter Schotten; Heike Leitte; Christoph Garth
In: Proceedings of the IEEE Symposium on Visualization for Cyber Security 2019. IEEE Symposium on Visualization for Cyber Security (VizSec-2019), October 20-25, Vancouver, British Columbia, Canada, IEEE, 2019.
So called operation technology networks, i.e. hard- and software used for monitoring and controlling physical/industrial processes, have been considered immune to cyber attacks for a long time. The recent increase of attacks in these networks proves this assumption wrong. A couple of technical constraints lead to approaches to detect attacks on industrial processes using available sensor data. This setting differs fundamentally from anomaly detection in IT-network traffic and requires new visualization approaches adapted to the common periodical behavior in OT-network data. We present a tailored visualization system that utilizes inherent features of measurements from industrial processes to full capacity to provide insight in the data and support triage analysis by laymen and experts. The novel combination of spiral plots with results from anomaly detection was implemented in an interactive system. The capabilities of the system are demonstrated using sensor and actuator data from a real-world water treatment process with introduced attacks. Exemplary analysis strategies are presented. Finally, we evaluate effectiveness and usability of our system and perform an expert evaluation.