Tanvir Islam is a staff data scientist at Okta, working at the intersection of Machine Learning and Security. With expertise in anomaly detection, statistical modeling, and artificial intelligence, he leads the development of data-driven systems to defend against emerging cybersecurity threats. His passion lies in developing innovative solutions that leverage the power of machine learning to enhance security measures, mitigate risks, and prevent fraud.
International revenue share fraud (IRSF), also known as toll fraud, is a type of fraud where fraudsters artificially generate a high volume of international calls/SMS on expensive routes. Here’s how it works.
Fraudsters exploit Okta’s authentication flow and make expensive phone calls and/or texts as part of the MFA flow where phone/text is used…
