Capturing network communication based on the TCP protocol and modifying it by creating a specialized Man-in-the-Middle proxy is one of many practices used for searching for security flaws in network applications. In this article, we will focus on the use of the cross-platform open-source application PETEP for testing fat clients using TCP protocols and show a simplified attack procedure on a sample vulnerable application.
How easy is eavesdropping on network traffic between two computers? Would it be enough to simply cut and split the network cable? Wiretapping is a way to connect to a network cable and start eavesdropping. During eavesdropping, the original communication is "copied" to the attacker's eavesdropping device. The transmitted data is not modified in any way.