Tzu-Yu Cheng received a B.S. from the Department of Economics at National Taiwan University, Taipei, Taiwan, in 2021. He is currently pursuing a M.S. in Electrical Engineering at National Taiwan University, Taipei, Taiwan. In 2024, he is a Research Assistant at the Taiwan Academic Cybersecurity Center (TACC), NTUST, under the National Science and Technology Council (NSTC). Additionally, he was a member of the Starburst Kiwawa CTF Team in Taiwan and has participated in several CTFs. He has won 8th in HITCON CTF 2023, and 3rd place in DEFCON 31. His research interests include large language models, AI security, and various cybersecurity topics.