The city of Hamburg’s data protection commissioner has ordered Facebook to stop collecting and storing data on WhatsApp users in Germany. The decision, issued on September 27, also orders the social network to delete all information already forwarded from WhatsApp on roughly 35 million German users. The Hamburg regulator said that neither the internet messenger nor Facebook had received individuals’ permission to share the information and had potentially misled people over how their data would be used in the future. Sharing contact details against the will of users infringes German law.