The disadvantages of the Internet mainly included the following: 1. Information leakage: The information stored on the network is easily attacked by hackers or stolen by criminals, resulting in unnecessary loss of personal information and privacy leakage. 2. Network security issues: The frequent emergence of network attacks and malicious software makes network security protection particularly important. Cyber attackers may use network loopholes to invade the system to steal sensitive information or even destroy the system. 3. Internet addiction: Overuse of the Internet may lead to eye fatigue, cervical vertebra disease, obese problems, and even affect social, family, and health. Internet addiction: Some people may be addicted to the Internet world and neglect real life, causing difficulties in their studies, work, family, etc. False information: A large amount of false information and rumors on the Internet may cause people to make wrong judgments and decisions, causing unnecessary losses and harm. There were many examples of the disadvantages of the Internet, such as information leakage, network security problems, addiction to the Internet, Internet addiction, false information, and so on.