Yeongjin Jang is a PhD student at Georgia Institute of Technology. Hisresearch interests are focused on operating system and mobile security. Inaddition to the academic research works, he participates various capture-the-flags (CTF), and won the black badge in DEF CON 23 (as a member of teamDEFKOR). Before joining to Georgia Tech, he received his BS degree in ComputerScience from KAIST in 2010.