Extending energy attack mitigation to multiple IoT devices

Sammanfattning: A subset of IoT devices in use today rely on energy harvesting technologies for power. This means that rather than being connected to a larger energy grid or using batteries these devices source their energy from their environment, for example by using solar cells. Such devices are susceptible to energy attacks whereby a malicious entity prevents a device from harvesting energy which in turn causes these devices to run out of energy and shut down. In order to improve these devices' resilience against such attacks, RISE has developed a detection system that can assess whether an attack is ongoing or not, as well as provide characteristics of the attack. This information can then be used by a mitigation system that attempts to improve a device's survivability when exposed to such an attack. This thesis focuses on exploring possible ways of extending and optimizing this mitigation system for groups of IoT devices and presents results that show improved performance of the devices when exposed to an energy attack.