FUD chapter is a very powerful tool that is used primarily to bypass antivirus detection. FUD stands for fully customizable userrland extraction. FUD chapters are used in encryption of keyloggers, worms, and viruses to make them undetectable by antivirus. It is also used in reversing engineering. It basically allows the user access to the system's inner workings by creating a phony program that looks and functions exactly like the real one. However, it is safe to install and cannot be detected or detected by antivirus software.
