Signifyd is an e-commerce fraud prevention service. It can identify devices uniquely and use a customer's IP address to determine their location, even detecting when customers are using proxies to spoof their IP addresses. Signifyd can learn about customers from their social activity and past behaviors and use public records to perform reverse lookups on addresses, names, and phone numbers. Signifyd can use the BIN (Bank Identification Number) of a credit card, debit card, pre-paid card, or gift card to identify the issuing institution and its location. The service can also find out how many orders a customer is attempting across multiple merchants and use cross-industrial blacklists to identify fraudulent users before they can make purchases.