Wifi Privacy Warning

Check your router settings, see -> Recommended settings for Wi-Fi routers and access points

Recommended settings for Wi-Fi routers and access points - Apple Support

• If your Apple device shows a privacy warning or weak-security warning about a Wi-Fi network, that network could expose information about your device. Apple recommends connecting to Wi-Fi networks that meet or exceed the security standards in this article.

-> If you need help with your Wi‑Fi password

If you need help with your Wi‑Fi password - Apple Support

If your Wi-Fi router is 4-5+ years old, it is likely not up to date, security wise. If that is the case, it's time to start thinking about a new router.