MJ0011 has been dedicated in the development of kernel security product as well as the research on finding system security vulnerabilities and kernel security attack and defense. He is currently working for 360safe, the most widely used security software in China, provides reliable kernel security defense for its 300 million users. He has spotted large amount of kernel vulnerabilities in Windows operating system and third party software. His work and research was presented at Xcon2008 and POC2009.