1. The neighbor's WiFi may not have proper security settings, and your personal information and sensitive data may be obtained by others, thus facing the risk of privacy disclosure.

2. Neighbors' network connection may have an unsafe environment. Hackers can carry out man-in-the-middle attacks and steal your WeChat account, password and other information.

3. Home appliances may be infected by malware or viruses. Through WiFi connection, these malware may spread to your mobile phone or computer, causing information leakage or other adverse consequences.