Fraud Management -­ Roaming Fraud

Roaming fraud is the use of a wireless operator’s services (away from the home country) with no intention to pay for calls made.  It can take up to three days for the home network to receive call detail records (CDRs) which provides an opportunity for the fraud to occur and can lead to significant losses.

The best technical solution is CAMEL which can carry detailed real-time roaming information over the signalling network.  However, this is expensive, limited to a small number of installations and has incompatibility issues. Furthermore, because of the increased signalling overhead, it is not possible to monitor all of the operator’s roaming subscribers: instead, the operator must select certain subscribers to monitor with CAMEL and use other monitoring methods for the remainder.

Near Real-Time Roaming Data Exchange (NRTRDE) is the GSMA standard to facilitate the exchange of CDR data with minimal delay.  NRTRDE can significantly lower the exposure to fraud because it significantly reduces the delay in receiving roaming CDRs.

Neural Technologies' Minotaur Fraud Management Solution supports a variety of options to identify fraudsters who manage to bypass the initial control mechanisms:

• Supports analysis of CDR data delivered in NRTRDE, CAMEL and TAP formats. 
   
• Analyses roaming authentication which takes place between the visited and home networks when a subscriber uses their phone on another operator’s network.
   
• Monitors authentication requests so a subscriber’s roaming activity can be profiled and any deviation from this profile or identification of high usage will then trigger an alert.
   
• Provides operators with the ability to immediately turn off fraudsters’ roaming capability instantly stopping revenue leakage. 
   
• Uses “velocity checking” feature to identify cloning as you can compare the times of a subscriber’s authentication requests received from different countries.
   
• Evaluates the ratio of calls made to home country, within the host network and to other international and PRS destinations, when CDRs are received.  Sophisticated rules can then easily distinguish between the typical behaviour of a subscriber and a fraudster.

Neural Technologies offers roaming fraud management within its Minotaur fraud solution or as a low cost stand-alone module available via the cloud.

Download our Roaming Fraud fact sheet

 

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