How to detect impossible travel and stop suspicious logins

Impossible travel detection is a critical method for identifying suspicious login activities that defy realistic travel speeds, crucial for preventing account takeover attacks and unauthorized credential sharing. This technique analyzes login patterns by comparing the time and geographical distance between consecutive login events, flagging any occurrences that suggest travel at speeds exceeding those of commercial flights as suspicious. While highly effective in catching fraudulent activities, impossible travel detection can sometimes be circumvented by VPNs and proxies; thus, integrating it with device intelligence, such as Fingerprint's platform, enhances accuracy by using over 100 signals to uniquely identify user sessions. This approach reduces false positives and streamlines user experiences by minimizing unnecessary authentication challenges. To optimize fraud detection, businesses should implement a layered security strategy that combines impossible travel detection with other risk signals, adjust thresholds according to user behavior, and ensure compliance with data privacy regulations.