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A fraud detection system examines logins and other sensitive transactions, evaluating the risk based on all contextual and historical information available for that user and transaction. This information typically includes who the user is, where they are, what kind of device they are using, and what they do once they gain access to the system. Based on the evaluated risk of a transaction, a fraud detection system can trigger intervention for additional authentication. Because a fraud detection system does not require a significant change to the end users' Web experience or force them to carry authentication devices, it addresses the typical shortcomings of second-factor authentication systems. This allows fraud detection systems to be deployed in a much shorter time frame and with a much lower total cost of ownership.
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