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SIMBox Fraud: Challenges and AI-Powered Solutions for Telecom Operators

Subex Blog

At its core, SIMbox fraud (also known as interconnect bypass fraud ) exploits the price disparity between local and international call rates. Fraudsters use a device called a SIMbox, which contains multiple SIM cards purchased from various mobile network operators (MNOs). These SIMs act as the gatekeeper for international calls.

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Top Telecom Fraud Trends in 2025: Evolving Threats & Solutions

Subex Blog

Fraudsters exploit vulnerabilities in telecom networks to reroute international calls as local ones, thereby evading international tariffs. Bypass fraud results in substantial financial losses by evading international tariffs and rerouting calls.