Techniques for ensuring secure access to local service of mobile devices of a wireless communication system are disclosed. The techniques control access to local services of mobile devices such that only authorized services are able to remotely alter the local services of the mobile devices. Before permitting access to local services of a mobile device, the identity of the network site seeking to have access is checked to determine whether the network site is authorized for such access. If the network site is authorized, then access is permitted and the network site is able to modify or alter the local services of the mobile device. On the other hand, when the network site is not authorized, then the network site is denied access to the local service so that the local services provided by the network site are not open to attack or corruption from unscrupulous network sites.