But I guess it is a given that the voice data of mobile calls and actual internet traffic (URLs, chat messages, mail contents, skype calls etc) are also processed.
I know for a fact that the operator is under legal obligation to allow law enforcement access to some degree of wire tapping, given they provide a legal warrant from a judge. That should prove that the processing also extends to the raw data of customers' interaction with the network.
How easily can an employee, e.g. an administrator of some sort in the mobile operator's different systems, by their own accord gain access to such data about a customer's mobile calls, internet traffic and so on?
Are there descriptions readily available of the processes that protect user data from such prying at some well-known operators? Are there publicized examples of cases of such prying or spying that have been uncovered by media or colleagues or privacy activists?