This holiday selling season may have been a good one for retailers, but every silver lining has a cloud. In this case, one shadow will be cast by chargeback fraud, which can occur when shoppers request credit card chargebacks from the issuing bank instead of from the merchant. "Merchants bleed $227 for every dollar lost to e-commerce fraud," said NuData's Robert Capps. Etailers are "more susceptible to chargebacks, as they deal in card-not-present transactions," observed Monica Eaton-Cardone, COO of Chargebacks911.