packet tracer needed for insider threats

I need you to program a software or build a network to detect malicious and unauthorised users using packet tracer or using Java or C++/c# any software to be able detect these malicious users and unauthorised users and to keep them away from getting access to private information. I also require 2,000 words a word documentation explaining in depth how it's done, and the difficulties you faced and what are the advantages and disadvantages of this software/network. this is a very simple example of a similar project where this person has used different methods to overcome such issues and fix them using their methods. [login to view URL]