Because you can reset your GMail password by sending an SMS to your cell phone? Most services assume that your phone is a trusted device, and that SMS is a tru

Because you can reset your GMail password by sending an SMS to your cell phone? Most services assume that your phone is a trusted device, and that SMS is a trusted delivery service. Neither of which is true if you can get someone to activate a new phone on your account, or you can hijack SMS.