International Revenue Share Fraud (IRSF Model)

Also known as: RSF, IPRN fraud

Revenue share fraud is a class of fraud in which attackers artificially inflate traffic to number ranges (International Premium Rate Numbers, artificially inflated destinations) where they receive a share of the termination fee from a complicit number-range provider. Techniques include PBX hacking, malware-driven dialers, Wangiri callbacks and SMS pumping to OTP flows. Loss detection relies on destination hot-lists, velocity thresholds and interconnect settlement analysis.

Categories: Radio Access NetworkFraudOperations and Business

Revenue Share Fraud in context

The radio access network is the layer where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations, downgrade attacks and jamming, and defenses hinge on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

Telecom fraud costs operators an estimated $40+ billion per year. Common vectors include International Revenue Share Fraud (IRSF), Wangiri callback scams, SIM box bypass, PBX hacking, subscription fraud and A2P grey routing. Effective defense combines real-time signaling analytics with CDR-side machine learning.

To place Revenue Share Fraud in the wider telecom-security picture, review Wangiri 2.0, Billing System, PBX Hacking, Flash Call Fraud, Numbering Plan and OTT Bypass.

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