Core member of chroot and TDOHacker security community in Taiwan. Former leader of agenda team in TDOHConf. Speaker in HITCON (Hackers In Taiwan Conference) CMT 2015, SITCON (Students In Taiwan Conference) 2015, HITCON CMT 2016 Lightning Talk, SITCON 2017, iThome#Chatbot. Accpet paper in many security conference such as BSidesLV, ICNC, MC2015, CISC. Interesting in C/C++, C#, VB, MASM, Python, Swift, Node.js, Java. Expert in Windows vulnerability, reverse enginerring.