Building more accurate models to assess the risk associated with card-not-present transactions is the strength of machine learning fraud fighting technology over rules-based decisions still in wide use. Riskified uses machine learning models as the backbone of its guarantee service to ecommerce merchants, which provides a yes or no decision on whether to process a payment and ship goods. If a transaction turns out to be fraudulent, Riskified reimburses the merchant for all losses. The decline rate for ecommerce transactions ranges from 2% to 5% of ecommerce payments depending on the merchan...