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Because of its physical nature, it is possible to drill a hole through the outer part of a coax cable and connect to the center connector. This is called a “vampire tap” and is an easy method to get access to the signal and data being transmitted.


Cover of Principles of Computer Security: CompTIA Security+ and Beyond, Fifth Edition, 5th Edition


Vampire tap is only for thicknet (10Base5). Thinnet (10Base2) uses a different method.