Case Study: Viator achieves 90% increase in chargeback win rates and 75% reduction in fraud with Accertify Professional Services

Viator engaged the expertise of Accertify’s Professional Services team to reduce fraud, revise rulesets, and improve chargeback win rates

Viator, a Tripadvisor company that connects travelers with over 395,000 tours and activities worldwide, faced rising chargebacks and an unoptimized fraud ruleset that made its systems hard to manage. The Fraud Systems and Analytics team wanted to move away from legacy, history-based rules toward a streamlined, machine‑learning‑driven approach to better identify legitimate transactions and improve chargeback outcomes.

Viator engaged Accertify Professional Services to rebuild and optimize rulesets, implement a new scoring “Challenger” strategy, and run quality control in shadow mode with periodic reviews. The project reduced rules and rulesets by nearly 50%, cut fraud by 75%, and increased chargeback win rates by 90%, enabling Viator to expand its fraud‑management program.

Viator

Bryn Curtis

Trust and Safety Operations Director