What is network security? What is data security? Not long ago, the People's Armed Forces Department of Nanyue District, Hengyang City, Hunan Province invited technical experts from the district's Cyberspace Administration to give a unique cybersecurity course to cadres, employees, and civil servants. There is enemy information online, so be cautious when going online The leader of the People's Armed Forces Department introduced that network security protection has strong professionalism, and only by persistently focusing on learning, education, and management can vulnerabilities be plugged and risks prevented from the source. They collaborate with local government, industry departments, and enterprises to invite network professionals and technical personnel. Through case analysis, knowledge popularization, and special lectures, they educate and guide everyone to enhance their ability to identify and avoid potential risks; Explore the establishment of a military civilian linkage early warning mechanism to ensure that, upon discovering abnormal situations and public opinion information, timely linkage reminders and warnings can be issued, tightening the "warning line" of network security thinking from the source. Files can be easily restored even after deletion, and images can be quickly restored by mosaic. During the teaching and coaching session, the instructors analyzed various common cases to identify potential risks and hazards. The attendees exclaimed, "We must strengthen our learning of network security knowledge and continuously improve our awareness of network security." Based on this, the People's Armed Forces Department regularly invites computer network technology experts from the National Security Commission to inspect the camp and identify weaknesses in hardware construction, software use, process optimization, warning reminders, and other aspects. Targeted improvement measures are formulated to strengthen the network security "firewall". (New Society)