The network protection action is led by the Ministry of Public Security, which organizes government units, institutions, state-owned enterprises and famous enterprises to carry out network security drills for both offensive and defensive sides. Organize the offensive and defensive sides, and the offensive side (generally called the red team) will launch a network attack on the defensive side (generally called the blue team) to detect the security loopholes of the defensive side. The action of protecting the net is held once a year, from June to September, for two to three weeks.