Dennis K. Nilsson

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A recent trend in the process control system (PCS) is to deploy sensor networks in hard-to-reach areas. Using wireless sensors greatly decreases the wiring costs and increases the volume of data gathered for plant monitoring. However, ensuring the security of the deployed sensor network , which is part of the overall security of PCS, is of crucial(More)
Process control systems using wireless sensor nodes are large and complex environments built to last for a long time. Cryptographic keys are typically preloaded in the wireless nodes prior to deployment and used for the rest of their lifetime. To reduce the risk of successful cryptanalysis, new keys must be established (rekeying). We have designed a(More)
— The automobile industry has grown to become an integral part of our everyday life. As vehicles evolve, the primarily mechanical solutions for vehicle control are gradually replaced by electronics and software solutions forming in-vehicle computer networks. An emerging trend is to introduce wireless technology in the vehicle domain by attaching a wireless(More)
The introduction of the wireless gateway as an entry point to an automobile in-vehicle network reduces the effort of performing diagnostics and firmware updates considerably. Unfortunately, the same gateway also allows cyber attacks to target the unprotected network, which currently lacks proper means for detecting and investigating security-related events.(More)
—Security threats on consumer devices such as mobile phones are increasing as the software platforms become more open and complex. Therefore, hypervisors, which bring potential new secure services to embedded systems, are becoming increasingly important. In this paper, we look into how to design a hypervisor-based security architecture for an advanced(More)