Chen-yu Dai (GD) is CTO at Team T5 Research, providing Digital Forensics & Incident Response services, developing Threat Intelligence Program and Platforms, consulting enterprise cyber defenses. He is studying at the graduate school of Department of Information Management in the National Taiwan University of Science and Technology. He also volunteered as deputy coordinator of HITCON, the largest hacker community and security conference in Taiwan. He has received many prizes from domestic and international CTFs, as well as bug bounty programs. He has been speaker at several conferences: HITCON, BOTNET TW, CODE BLUE, IEEE GCCE, etc.