US Patent 9058607 Using network security information to detection transaction fraud

A fraud management system is configured to store rules for detecting fraud. The fraud management system is further configured to receive a transaction involving a consumer and a merchant; obtain network security information associated with malicious activity in a voice network or a data network, where the network security information indicates that the consumer has been involved in malicious activity in the voice network or in the data network; select a subset of rules based on the network security information and information associated with the transaction, the merchant, or the consumer; process the transaction using the subset of rules to generate alarms; process the alarms to generate a fraud score for the transaction; and output information regarding the fraud score to the merchant to assist the merchant in determining whether to accept, deny, or fulfill the transaction.