After getting my master of science degree I've immediately started working as an embedded software engineer for a display and projector manufacturer heading a small multidisciplinary team with fpga, hardware and software engineers after some year. After 5 years, changed the job and started working as a system architect for IoT and connected devices, getting very fast the focus on IoT security in all facets, starting with simple question whether security measures are needed or not up to analysis, concepts and implementation for complex products towards the work on nation legal activities.