Ebay, Incorporated

Christine Cheng

Reed Maltzman

Noel Morin

Dheeraj Mohnia

Ha Nguyen

Brenda Won

Isaac Strack

Methods and apparatuses for detecting fraudulent activities made over a network-based transaction facility using a machine. In responsive to a first event with respect to the network-based transaction facility and initiated under a first user identity from the machine which is coupled to the network-based transaction facility via a network, the method causes a first identifier associated with the first user identity to be stored on the machine. In responsive to a second event with respect to the network-based transaction facility and initiated under a second user identity from the machine, the method causes a detecting of a potentially fraudulent activity by detecting a lack of correspondence between the first identifier stored on the machine and a second identifier associated with the second user identity.

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Sunnyvale, CA, United States of America

Christine Cheng