This solution brief explains International Revenue Share Fraud (IRSF), a fast-growing threat where attackers exploit premium rate numbers to inflate call or message traffic and steal funds. Each attack can cost businesses up to $50,000. Fraudsters automate traffic through compromised numbers and collude with carriers to generate revenue. UCaaS and CCaaS providers, as well as online businesses using OTPs, are high-risk targets. Proximus Global, combining Telesign, BICS, and Route Mobile, counters IRSF using machine learning, real-time decisioning, and risk scoring to detect suspicious activity and block fraudulent communications instantly.

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