Case Study: Microsoft Outlook achieves 98% fraud reduction and 33% higher customer throughput with Arkose Labs

Microsoft Outlook.com Tackles Fraud and Abuse Globally Using Arkose Labs

Microsoft Outlook faced large-scale fake account registrations and downstream abuse where bogus email accounts were used for fraud and extortion. Legacy controls and SMS verification were costly, easy for fraudsters to bypass, and harmed legitimate user throughput — so Outlook turned to Arkose Labs for a more effective, user-friendly solution.

Arkose Labs deployed its adaptive enforcement platform — showing real-time 3D interactive challenges and applying custom rules to detect anomalous behavior — to distinguish good users from bots and malicious humans. The Arkose Labs implementation improved good customer throughput by 33%, reduced fraud and abuse by 98%, eliminated SMS-verification complaints, delivered major cost savings, and was rolled out globally (supporting 100+ languages).

Microsoft Outlook