Case Study: Wanelo achieves a 77% drop in dispute rate with Sift

How Sift helped Wanelo create a successful fraud solution from the ground up

Wanelo is a mobile-first marketplace for Gen Z that evolved from a social shopping site into an e-commerce platform with a 5x increase in sellers. As in-app transactions grew, the small Marketplace Operations team struggled with spammers, scammers and rising chargebacks (0.87% dispute rate), nearly 70% of which stemmed from friendly fraud and required time-consuming manual review.

Wanelo integrated Sift’s machine-learning and Sift Formulas in about a week to automate scoring and review workflows, enabling rapid adjustments without heavy engineering. The solution drove a 77% drop in dispute rate (to ~0.20%), saved an estimated 100–150 manual review hours per month, and cut order declines by 52%, while reducing false positives and improving proactive fraud prevention.

Wanelo

Courtney Fahrer

Marketplace Operations Manager