Kai Zhang is Tencent Principal Engineer with over a decade of experience in combating cybercrimes. He has led security projects in game security protection, financial risk control systems, and anti-fraud architectures. His core expertise lies in big data security threat modeling.Ze Yang is Tencent Researcher dedicated to financial risk governance. He has developed AI-powered mechanisms to combat underground economy threats in payment ecosystems.Liyang Hao is Tencent Researcher focusing on behavioral security systems. He has designed real-time gambling/fraud intervention engines for social payment scenarios.Qi Xiong is Tencent Principal Engineer with 15 years of security architecture experience. He has spearheaded compliance-driven security solutions for fintech applications and mobile ecosystems.