For those who don't know WhatsApp just got an update and when you open up the app there is a very clever way to steal you data share it with Facebook therefore see below on how to "deny" them the rights on how to do it.
Who knows if there's something else but this is what I found getting reading the Terms and Conditions.
I stand corrected but it must be done within 30 days out looks like.
URGENT
- Open your Whatsapp.
- Click on Settings
- Click on Account
- You will see 'Share My Account'.
- If you read underneath, you will see that all your information from Whatsapp is shared with Facebook
- Quickly switch it off.
- You have only 30 days to do this.