Every year, many big and small incidents in industrial environments, like power plants, factories, or food supply, find their way into newspapers. All those affected industries are backed by highly branched and historically grown Operational Technology (OT) networks. A sizeable portion of such incidents would have been avoidable, if network segmentation was done correctly and patches for user devices (not always possible in OT) were installed.Despite such known problems, that also lead to the compromise of traditional IT networks, a bunch of unknown vulnerabilities are unfortunately also present in OT infrastructure. OT in modern factories contains of networked (and smart) devices, especially on level 1, also called the control level, of the Purdue model. Devices, like PLCs, industrial router/switches, data diodes, and more, cannot be easily tested if they are in use by the … Continue reading DeepSec 2022 Talk: Faking at Level 1 – How Digital Twins Save Your PLCs – Thomas Weber