Whatsapp accounts are based on phone numbers. This means your phone number is your username and it’s also used for authentication. While this is not perfect from a privacy standpoint it saves the, often non-technical, user from having to remember yet another password that they could potentially…
Article Link: http://www.securitynewspaper.com/2017/01/23/hijacking-whatsapp-accounts-using-whatsapp-web/