US Patent 9489538 Role-based anonymization

A data anonymization system provides role-based anonymization for data requesters. The system applies a base anonymization function to subscriber data related to at least one subscriber of a service provider to produce base anonymized subscriber data. Upon receiving a request for the subscriber data from a data requester, a role assigned to that data requester is determined to identify a custom anonymization function to be applied to the subscriber data in order to produce custom anonymized subscriber data for the data requester.