Industrial Automation & Control Systems (IACS) or Operational Technology (OT) are measurement and control systems that ensure, for example, that locks and bridges function, energy and gas are distributed, drinking water is cleaned, nuclear material is processed, trains arrive at their destination, containers are being transported and elevators are functioning. This makes IACS crucial for the continuity of the (vital) infrastructure and, according to the Cyber ​​Security Council, they deserve at least as much attention as ICT when it comes to cybersecurity. After all, exploiting the vulnerabilities in IACS can lead to major economic damage and social disruption.