Changhoon Yoon is a PhD student at KAIST (School of Computing) in South Korea.He is working with Dr. Seungwon Shin at Network and System SecurityLaboratory, and his research interests primarily lie in the area of networksecurity including Software-Defined Networking (SDN) and Network FunctionVirtualization (NFV) security. He is currently leading Security-Mode ONOSproject, which is a collaborative project with the researchers from ON.LAB andSRI International to design and implement a security extension for ONOS, andhe is also participating in other SDN security projects, such as SDN WANsecurity project and etc. In addition, he has presented "Security-Mode ONOS"at ONS 2016, and he published several research papers on SDN security at amajor journal and a workshop.