“The Hamburg commissioner for data protection and freedom of information, Johannes Caspar, is looking to stop Facebook from aggregating the data from WhatsApp, fearing that the company would use it to expand its marketing and advertising business.”
When Facebook bought WhatsApp in 2014 it promised to keep the data separate. Then it told users to accept sharing or lose the app. Take it or leave it is not consent. A German regulator had to say so out loud.