• On Threats to the 5G Service Based Architecture 

      Køien, Geir M. (Peer reviewed; Journal article, 2021)
      The 3GPP-based 5G System marks a clear departure form the previous generations. There is a new radio system and a complete overhaul of the core network design. The core network is redesigned both on the control plane parts ...
    • Zero-Trust Principles for Legacy Components: 12 Rules for Legacy Devices: An Antidote to Chaos 

      Køien, Geir M. (Peer reviewed; Journal article, 2021)
      In this paper we briefly outline as set of rules for integration of legacy devices into a modern industrial control system. These rules are fairly simple, and are mostly derived from “Zero Trust” principles. These rules ...