Jundong Xie, a security expert at Ant Security Light-Year Lab, is a graduate of Zhejiang University and a former member of the AAA CTF team. His areas of interest include browser security and instant messaging software security. From 2018 to 2020, he participated in three editions of the Tianfu Cup International Cyber Security Competition, where he broke into Safari, Adobe Reader, and multiple mobile devices with his teammate. In the 2020 Tianfu Cup, he and his teammate were the only ones to complete a fullchain attack on the Safari project. He is also very willing to share his research findings, and has presented his topics at Blackhat Asia 2021, Blackhat USA 2021, and ZeroCon 2022.