Tianyi Xie (Jackyxty) is a senior security researcher and CTF player at KeenLab of Tencent. He is the captain of CTF Team eee and A0E. He is the winner of VMware category in Pwn2Own 2017 and baseband category in Mobile Pwn2Own 2017. He is also a member of the "Master of Pwn" winning team in Mobile Pwn2Own 2017.