Abstract: A financial institution computing system includes a network circuit enabling exchanging information over a network, a customer database storing financial information and validated customer information for a plurality of customers of the financial institution, and a transaction authentication circuit configured to receive transaction information from an originating computing device; determine that the transaction is one of an on-us transaction or an off-us transaction; authenticate the transaction information, in response to the transaction being off-us, by determining that the transaction information matches information stored in a third party authentication system; authenticate the transaction information by determining, in response to the transaction being on-us, that the transaction information matches the validated customer information stored in the customer database; and transmit a confirmation message to the originating computing device.