| 摘要 |
A method for enabling the tracing of a computer connected to a data network, for example the Internet. The computer has an IP address when connected to the Internet, wherein said method comprises storing at least one authorized virtual address, comparing said actual virtual address with said at least one authorized virtual address and in case that said actual virtual address is not identical to an authorized virtual address, sending an electronic message to a predetermined virtual address, said electronic message containing said actual virtual address.
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