how Can I hack this

C!RCU!T tr0jAn  cin.get(); NOT system("Pause");

Well, I made this as I have had moments where i have looked a website and have thought, 'hmm, how could I hack this'. I compiled this list of information and methods not only to help myself, but to help others alike. I didn't really go into to much detail, that's for you to do, this is just the basic concept and methods to choose from. Please post if you have any methods that I may have missed out.