Abstract: There is disclosed a technique for use in managing policy. The technique comprises storing information relating to at least one previous authentication request. It should be understood that the information can be used in an authentication operation performed in connection with an authentication request. The technique also comprises receiving a policy request to alter a policy relating to an authentication operation that can be performed in connection with an authentication request. The technique further comprises generating an alteration to the policy based on the stored information and the received policy request.

Abstract: An improved technique involves identifying other transactions for investigation from entries in a database that involve a particular actor involved in a known fraudulent transaction. From a transaction log listing transactions, a server generates a database of transaction entries which identify transactions from the transaction log, each transaction entry (i) describing an activity and (ii) identifying a set of actors involved in that activity. Based on a known fraudulent transaction involving a particular actor, the server finds a set of transaction entries from the database which involve the particular actor. From the found set of transaction entries, the server identifies other transactions for investigation.