Ca, Inc.

Sas Institute Inc.

Kannan Shashank Shah

Paul Charles Dulany

Revathi Subramanian

Hongrui Gong

Brian Lee Duke

Vijay Desai

Systems and methods are provided for identifying and detecting unauthorized user activity and for decreasing the rate of false-positives. The disclosed systems and techniques may involve analysis of users' past activity data so that individual classifications and authorization decisions with respect to requested user activity are based on activity data associated with a user's use of multiple services.

Unauthorized activity detection and classification

A method of operating a computer system is disclosed. An eCommerce authentication request is received from a merchant node. The eCommerce authentication request has content including cardholder information. A risk score for the eCommerce authentication request is generated based on comparison of the cardholder information of the eCommerce authentication request to cardholder information of eCommerce authentication requests of a plurality of merchant nodes. The eCommerce authentication request is selectively provided to an authentication node based on the risk score.

Controlling eCommerce authentication based on comparing cardholder information among eCommerce authentication requests from merchant nodes

A method of operating a computer system is disclosed. An eCommerce authentication request is received from a merchant node. The eCommerce authentication request has content including merchant information. A risk score for the eCommerce authentication request is generated based on comparison of the merchant information of the eCommerce authentication request to merchant information of eCommerce authentication requests of a plurality of merchant nodes. The eCommerce authentication request is selectively provided to an authentication node based on the risk score.

Controlling eCommerce authentication based on comparing merchant information of eCommerce authentication requests

A method of operating a computer system is disclosed. An eCommerce authentication request is received. Content of the eCommerce authentication request is processed through a non-linear analytical model to generate a risk score. The eCommerce authentication request is selectively provided to an authentication node based on the risk score. Related authentication gateway nodes and computer program products are disclosed.

Controlling ecommerce authentication with non-linear analytical models

This disclosure describes methods, systems, and computer-program products for determining classification rules to use within a fraud detection system The classification rules are determined by accessing distributional data representing a distribution of historical transactional events over a multivariate observational sample space defined with respect to multiple transactional variables. Each of the transactional events is represented by data with respect to each of the variables, and the distributional data is organized with respect to multi-dimensional subspaces of the sample space. A classification rule that references at least one of the subspaces is accessed, and the rule is modified using local optimization applied using the distributional data. A pending transaction is classified based on the modified classification rule and the transactional data.

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San Diego, CA, United States of America

Kannan Shashank Shah