WhatsApp does share your IP address and phone number with Facebook, even without the updated Terms of Service.
On January 7, Facebook thus indicated that European WhatsApp users would not be affected by the use of personal data : “WhatsApp still does not share the data of WhatsApp users in the European Union with Facebook for the purpose of Facebook using this data to improve its products and advertisements ”. Nevertheless, twelve days later, it seems that the social network has changed its tune.
For information (because we discussed it with several journalists): @FacebookFR confirms to me that WhatsApp will share information related to the phone number, the IP address and the transactions (when the function will be available in France) with Facebook, including in FR
– Raphael Grably (@GrablyR) January 19, 2021
A discourse far from clear on the Facebook side
In addition to these few tweets, the BFM reporter also recalls the difficulty of obtaining clear information from Facebook, which does not seem determined to fully play the transparency card. “When I ask Facebook about the difference with politics in the EU and outside the EU, they just tell me about the delivery of targeted advertising. Which is surprising since he seemed to say this targeted advertising would not apply anywhere “, he says. He also regrets a particularly vague speech which seems intended so that the public “understands absolutely nothing” .
Finally, regarding the use of private data for targeted advertising, Facebook is not closing the door. The social network indicates that WhatsApp’s personal data cannot be used to deliver targeted advertising on Facebook, but this restriction mainly stems from a legal ban. However, if the legal framework evolves, Facebook may well have to use WhatsApp data to further target its users, after receiving approval from the Irish Data Protection Commissioner.