Free trial to enter the Zhejiang University Zhu Kezhen College is a science class, the United States Northwestern University visiting scholar, from the student era began to enter the field of network security attack and defense, with many years of actual combat experience. At the Alibaba Security Technology Summit, BlackHat World Black Hat Conference to do a speech or show. 2016 ISC General Assembly cloud security special co-producer. Yusen Chen Won a large number of network security offensive and defensive champion, including 360 cups of college students safety competition finals champion, CNCERT China Network Security offensive and defensive champion, the capital network security day offensive and defensive champion.