ABSTRACT
This chapter discusses one of the most famous dark nets, perhaps one that many novices think is the whole deep web. The name Tor is an abbreviation for The Onion Router. Tor is software that is a key enabler of anonymity in communication. Tor developers have not concentrated on implementing features in the software to prevent websites from determining when they have been accessed via Tor. Tor was released to the public with the view of promoting anonymity on the internet. Tor uses a complex overlay network that is aimed at hiding the identities of its users and their internet activity from surveillance or traffic capture and analysis. Tor can also be eavesdropped on using timing analysis. This is whereby an entity monitors the time at which packets leave a server and the time at which they get to a client and then make a correlation.
