This change is very effective because it enables reverse analyzers to face more abstract functional units.
Because of this, the original version is difficult to interpret with the human eye. If the control flow is not understood, it is difficult to determine the true content of the message.Another technique is a technique called the bogus function calling graph. However, this method is easily susceptible to dynamic analysis of the program. Another technique is the COOPS (Control Flow Oriented Obfuscation Scheme), which changes the control flow structure of the program. Moreover, it improves the resistance of the software against similarity analysis techniques.
It is important to remember that obfuscation algorithms affect the program's semantics as well as the calling relationship. COOPS starts from the semantics of the program and transforms it into an interfunction call flow graph. This method changes the called function before running the target program. In this case, the obfuscated version is influenced by the dynamic analysis, which causes the obfuscated calling relationship to change. Also, the control flow is critical to determining the intent of the program.

Developers of software create some codes that help in making it hard for other people to copy their original work. The word obfuscate refers to something made in a hazy way such that understanding it is not easy. Mainly, the practice among programmers is to make their programs in a simple way. They then use an obfuscator which makes it hard for another person to copy those programs.This obfuscation software utilizes a set of codes that are not easily comprehensible. The NET obfuscator from Skater is one typical example. When it comes to computing, the meaning is still the same. It makes reference to software protection.