https://www.androidcentral.com/how-opt-out-sharing-your-information-facebook-whatsapp-android
How to opt out of WhatsApp sharing your information with Facebook | Android Central
Sep 22, 2016 - Since Facebook owns WhatsApp, it's finally time for the purchase to pay off. Facebook now wants your WhatsApp data, including your phone number. Here's how to...
how to opt outsharing your information
https://go.aspen.edu/opt-out-from-the-sale-and-or-sharing-of-your-personal-information/
Opt-Out from the Sale and/or Sharing of Your Personal Information | Aspen University