| 摘要 |
According to one aspect of the present invention, there is provided a method, in a communication system having a plurality of communication devices each having a first and second identifier associated therewith at the time of a connection attempt to the network, of identifying when one of the identifiers has been cloned, the connection status of the first identifier being obtainable from a network element, comprising receiving the first and second identifiers of a communication device, determining whether one of the identifiers has been cloned, the determination being made in part through information obtained from a connection history database, and in part through information obtained from the network element.
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