SMS traffic fraud detection is the most popular form of communication for consumers and businesses alike, but that popularity makes it a prime target for fraudsters seeking to exploit automated systems at scale. One common form of SMS traffic fraud is SMS pumping, which happens when an attacker exploits a business’ automated SMS workflows to trigger OTPs or notification messages at inflated volumes. Once the message is triggered, the criminal routes the traffic through premium-rate numbers under their control and collects a share of the revenue from the carrier. Despite the high volume, these attacks are difficult to detect because the messages appear delivered and delivery reports show no anomalies. By the time the issue is spotted, it can cost a business thousands – even tens of thousands – in inflated messaging costs.

Live Malicious IP Lists: Keeping Up With Active Threats

The best way to prevent SMS traffic fraud is by monitoring traffic and detecting unusual patterns. When a business notices a sudden, unexplained increase in SMS messages sent per day or per hour, this is a strong indicator of a bot attack. Using products with smart dashboard tools that offer real-time visibility into SMS data and that utilize CAPTCHA challenges to stop bots from reaching SMS workflows can further help. These tools can work alongside rate limiting and device verification to keep your business safe from illegitimate messages at scale.

GeeTest offers solutions for businesses looking to protect against bot attacks, including a $1 million SMS Toll Fraud Warranty. Our products intercept bots before they reach SMS workflows, preventing them from triggering messages and delivering fraud at scale. They also provide a rich set of analytics that helps businesses identify suspicious activity, providing valuable insights into SMS activity and enabling them to act quickly.