Abstract: The inventive system and method enable secure remote commercial order transactions between customers and merchants. The inventive system and method ensure that customer entire confidential financial data (CFD) is never transmitted to the merchant by keeping that CFD proprietary to the customer's exiting financial service provider (FSP) with which the customer has established a financial account, and from which the merchant is authorized to receive payments. When an order is placed, the customer provides to the merchant a partial CFD (PCFD) sufficient, along with additional data, to identify the FSP to the merchant, and to identify the customer to the FSP. The merchant then provides the PCFD, along with at least partial order data, to the FSP, and order confirmation data (OCD) to the customer. Various embodiments of a novel order verification process are also provided that enable authorization, by the customer, of the order through contact between the customer and the FSP.