This referral list contains all ELV and Bank Account bank account numbers which had been used in chargeback transactions where the chargeback had a non-fraudulent reason (ex. Insufficient Funds). This is a global list across Adyen's entire network.
Friendly fraud is when good shoppers use their own bank account, but chargeback even when their goods have been delivered. These fraudsters range from one-time offenders who may have been unhappy with their product to consistent abusers of their ability to chargeback on legitimate transactions. This risk check is focused on finding friendly fraudsters and highlighting that they have committed chargebacks on Adyen's network in the past.