A method and a system are described for providing operational business service verification in a telecommunication network. The method comprises the steps of: (i) receiving information which relates to transactions from a plurality of information sources, wherein the transactions are associated with one or more pre-defined applications; (ii) based upon the information received, determining whether that at least one pre-defined transaction criterion has been met; and (iii) if the at least one pre-defined transaction criterion has been met, providing verification of the legitimacy of the respective transaction that relate to that pre-defined application.