Considering that the Internet is being used on a daily basis nowadays, for several hours a day, it is to ask if the internet search is really that harmless or if someone is trying to violate our privacy. It’s really important to think about privacy problems. Using Tor search engines allow users to communicate anonymously. Onion protocol protects the anonymity of the sender and receiver of messages. There are several types of attackers and attackers who have tried to compromise the anonymity of communications, some of them have gone into the ultimate attack, attacked packet numbers, tracked the start of a connection, and attacked within the time adapted to the TOR simulator. Packet counts and time analyzes have verified the accuracy of Tor simulations. Three different methods can be used: simulations, laboratory experiments on the test TOR network, and experiments on the current TOR network. All three methods described are appropriate for research questions. To study the effectiveness of an end-to-end assurance attack against the current size of the Tor network. Live network experiments are needed because only they can give correct answers regarding the real network. End-to-end attacks can be explored by simply deploying two TOR nodes, an inbound and an outbound node, and routing your own client traffic across both nodes. Numerous attacks have been implemented. The result of the attack allows a proper demonstration of the TOR simulation. The higher the traffic, the greater the delay in the network.