UK's Information Commissioner's Office (ICO) has ordered WhatsApp to not share user data with Facebook since according to the former, doing so would be illegal.
The ICO had opened an investigation into the same in August 2016 as it had concerns that the chat app wasn't being "fully transparent" about the handling of personal information vis-à-vis its parent company Facebook.
There is no lawful basis for WhatsApp's sharing personal data
"WhatsApp has not identified a lawful basis for processing any such sharing of personal data. If they had shared the data, they would have been in contravention of the first and second data protection principles of the Data Protection Act," Information Commissioner Elizabeth Denham said.