IP Geolocation for Fraud Detection — A Developer's Guide

IP geolocation is one of the most accessible fraud signals available. It won't stop sophisticated attackers, but it catches a significant amount of low-effort fraud with very little implementation overhead. How IP Geolocation Helps Detect Fraud Impossible travel: A user logs in from Germany, then from Brazil 10 minutes later. Country mismatch: Billing address is in the US, but the IP is in a different region. High-risk region matching: Signups from regions associated with specific fraud patterns