1. A gateway server to facilitate supervision of an online identity, the gateway server comprising: a profile database to store access information to online services of a user of a client computing device, wherein the access information is inaccessible by the user of the client computing device; a policy database to store a set of policy rules that define authorized activity between the client computing device and the online services; a hardware processor to implement: an identity manager module to (i) generate new access information to access a new online service in response to a request to register the new online service received from the client computing device, wherein the new access information comprises a password randomly generated by the gateway server, (ii) receive a request for access to the new online service from the client computing device, (iii) retrieve, in response to the request, the new access information to the new online service from the profile database, and (iv) facilitate access to the new online service for the client computing device using the new access information; and an activity monitor module to control activity between the client computing device and the new online service based on the set of policy rules.