In August, privacy groups in the US spoke out against the change, which allows WhatsApp to pass account information like mobile phone number, contacts, profile pictures and status messages to its parent company. Facebook claims that sharing information between the two will help it to improve the experience and fight abuse across both platforms, while WhatsApp defended the change by saying that all messages on the service will remain encrypted. The case before the Delhi High Court was brought by two Indian students who alleged the new terms of service will jeopardize the privacy and "severely compromises" the rights of over 100 million active WhatsApp users in their country.
The change took effect earlier this week, but yesterday the German government also ordered Facebook to stop collecting user data from WhatsApp and to delete any information it had already gathered. In that case, Facebook has said it will appeal the court order.