First, for any doubters, watch this to understand the degree of data theft happening on your network and all your text messages and browsing history by Zuckerberg mobile apps- https://www.youtube.com/watch?v=VhSX7IzHkrE

The problem:

Facebook / Instagram / Messenger apps have given themself permission to harvest all your text messages, browser history as well as data from all connected devices and nearby on your homes wifi.

The solution

1. Instagram and Facebook and Messenger apps on your mobile devices need to be deleted, now.
2. If you can't live without facebook or instagram, know that deleting your app doesn't delete your account, the account can still be managed from any browser by manually logging into facebook / instagram. The APP on your phones is the trouble maker, not the website. Remove Facebook Messenger, Facebook, Instagram and any Zuckerberg apps from your phone or tablets.
3. To prevent the problem of your niece or family members getting on your wifi and unknowingly stealing data from everything, it's time to manage your network. Critical: Most wifi routers have an option called Guest wifi or Guest mode. The idea behind a guest network is that anyone using your wifi in guest mode can't communicate with other devices, it's just a straight pipe to the internet, but not the intranet. Enable guest wifi and redirect all wifi devices to that connection. To ensure they don't automatically keep reconnecting to normal wifi, change the passwords on standard wifi- both 2.4ghz wifi and 5ghz wifi so any old connections are forcefully destroyed. Now reconnect ALL wireless devices in your house and all IOT devices (roku, Alexa, etc) into the new guest wifi.

If you have something like a wifi printer which others need to see, you can put that on standard wifi, but that's most likely an office situation, not a home problem. This is just to un-fuck your homes network which is wide open right now for apps to exploit and steal your data + known mac addresses and build maps of how to spy on every home in America. Stop being a sitting duck.