Coral Systems, Inc.

Lightbridge Corporation

Michael D Liss

Eric Arthur Johnson

Flemming B Jensen

An apparatus for detecting potentially fraudulent telecommunication activity, comprising a digital computer; interface, operatively connected to the digital computer, for receiving a call information record for each call involving a particular subscriber; comparator operating within the digital computer, for comparing a parameter of the particular subscriber's current usage with a subscriber-specific pattern of the particular subscriber's historical usage; and an output for outputting an indication of a potentially fraudulent call based upon a result of the comparison performed by the comparator.

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Nederland, CO, United States of America

Michael D Liss