His research focuses on operating system security, and he is particularly interested in identifying and analyzing emerging attacks on computer systems and building countermeasures against these attacks. Besides academic research, he has participated in several CTF (Capture The Flag) competitions. His team, DEFKOR won the DEF CON CTF in 2015, and Disekt competed in the final stage of the DARPA Cyber Grand Challenge in 2016. He received his B.S. degree from KAIST (2010), M.S. Degree (2016) and Ph.D. (2017) from the Georgia Institute of Technology.