Patent attributes
Multifactor authentication systems and methods employ an online payment server processor that authenticates a user in an online session with a merchant website server processor based on data representing one or more predefined authentication factors received from a user device processor over a communication network and sends data representing a secure user login cookie to the user device processor over the communication network based on the authentication of the user in the online session with the merchant website server processor. Thereafter, the online payment server processor authenticates the user in a subsequent online session with the merchant website server processor based in part on identifying the data representing the secure user login cookie on the user device and in part on data representing a second predefined authentication factor received from the user device processor over the communication network.
