Cyber Security Risk Identification in Power Internet of Things System

For Energy Internet, Ubiquitous Power Internet of Things (UPIoT) not only promotes its digital and intelligent level, but also brings uncertain social factors, which provides a new environment for its cyber risk brewing and diffusion. Correctly, understanding and evaluating the cyber security risk of UPIoT is an important guarantee for Energy Internet Construction. A method to evaluate and quantize cybersecurity risk of UPIoT is proposed to determine the potential risk. Using AHP algorithm and security state to quantify the risk of network unit, the cyber security risk assessment of network is evaluated combined with the network unit importance. Experimental results show that this method can not only reflect the security status of network unit, but also identify the key risks in the network.