You are directly involved by installing the Whatsapp application and agreeing to the ToS, which clearly states: >We collect information about your online and s

You are directly involved by installing the Whatsapp application and agreeing to the ToS, which clearly states: >We collect information about your online and status message changes on our Services, such as whether you are online (your “online status”), when you last used our Services (your “last seen status”), and when you last updated your status message. And >Your phone number, profile name and photo, online status and status message, last seen status, and receipts may be available to anyone who uses our Services, although you can configure your Services settings to manage certain information available to other users. "B-but people don't read those!" - well then maybe that's something to worry about instead of complaining about an API which is the nature of the product.