If you’ve ever wondered how the technical side of wiretapping works this NetworkWorld article is for you.
The most common type of tap is a pen register (otherwise known as trap and trace), which produces a log showing what numbers were called, and the dates, times and durations of the calls. The second type intercepts the content of the call.
Without going into excruciating detail this article gives an excellent overview of the types of wiretapping and how each type is accomplished. Some relevant laws and tapping methods for data networks are also discussed. If you’re unfamiliar with wiretapping technology this article provides a great jumping off point for further research.
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