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System and method for the detection and termination of fraudulent services

  • US 7,512,221 B2
  • Filed: 01/28/2005
  • Issued: 03/31/2009
  • Est. Priority Date: 07/31/2002
  • Status: Expired due to Fees
First Claim
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1. A system for the automatic detection of fraudulent activity on a transaction network, for which each transaction over the network has an identifier associated therewith, the system comprising:

  • voice comparison means for comparing a first sampled voice of a user of a first transaction with a subsequently sampled voice of a user of a subsequent transaction having an identical identifier to that of the first transaction, and control means for determining, from said comparison, a profile of user usage that is representative of a number of different users of the identifier, for comparing the profile of user usage with a threshold for fraudulent use and for generating a fraud condition signal in the event that the profile of user usage exceeds said threshold.

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