Ken Xie, who was born in China, is one of the most successful entrepreneurs in Silicon Valley. His focus has been on transforming cybersecurity technology, such as by developing the first ASIC-based firewall and VPM appliance in the 1990s.
He also started several breakout companies. There was NetScreen, which was sold to Cisco for $4 billion in 2004. Then he co-founded Fortinet, which has seen consistently strong growth (the other co-founder was his brother, Michael). The market value is about $22.5 billion and there are more than 450,000 customers ...