The invention relates to a method and an arrangement against fraudulent use
in a telecommunications network. The invention is based on the idea that
at least one fraud profile identified by an identifier is created and the
identifier is included in the subscriber data of some subscribers. Based
on this identifier the fraud restriction parameters of the subscriber are
retrieved from the subscriber's fraud profile, and these fraud restriction
parameters are used in detecting and indicating possible fraudulent use.
The fraud restriction parameters include values for different service
limits, such as the maximum number of call forwarding re-quests and/or the
maximum number of location updates during a certain period, and possibly
at least for some features an action parameter related to a service limit
and implemented when the service limit is reached.