Wi-Fi security is crucial to protect personal data and prevent cyberattacks.Understanding Wi-Fi security protocols: WEP is weak, WPA2 is the standard, and WPA3 offers advanced protection.Authentication modes: Use complex passwords, prioritize WPA2-Personal or WPA3, disable WPS, and consider MAC address filtering.Practical tips: Change router password, hide SSID, keep router updated, and enable connection alert notifications.