Ken Xie is a Chinese-American billionaire businessman and prominent entrepreneur in the cybersecurity industry. Born on January 1, 1963, in China, he immigrated to the United States for education and career advancement. He earned a Bachelor of Science from Tsinghua University in Beijing and a Master of Science in Computer Engineering from the University of Massachusetts Amherst in 1991. His early career included founding Systems Integration Solutions (SIS) in 1991, focusing on network management and security. In 1996, he co-founded NetScreen Technologies with Nir Zuk, developing innovative firewall and VPN products. NetScreen's success led to its acquisition by Juniper Networks in 2004 for $4.05 billion. Building on this experience, Xie founded Fortinet in 2000 while still involved with NetScreen, creating the FortiGate series of next-generation firewalls that integrated multiple security functions. As Founder and CEO of Fortinet, headquartered in Sunnyvale, California, he has overseen its evolution into a global cybersecurity leader specializing in firewalls and network security solutions, with the company going public in 2009 and achieving market capitalization exceeding $50 billion at times. His leadership emphasizes accelerated security processing using custom ASICs, positioning Fortinet as a key player against cyber threats. Xie's partnership with Nir Zuk, stemming from their NetScreen collaboration, has significantly influenced the network security landscape, including the founding of Palo Alto Networks by Zuk. Xie is recognized as a self-made billionaire with net worth largely tied to Fortinet stock, maintains a low public profile, and wields significant influence in Silicon Valley's tech ecosystem while focusing on innovation against evolving digital threats. No major controversies or legal issues are prominently documented.