Faking a Hack Attack

I still don't know what to do but while researching for a genre to work on I found this great website that can fake a computer "hacking" where anyone can hit random keys and special code shows up in the computer, to add the icing to the cake, when you hit the Alt key an "access granted" pop-up gets shown in the screen. This website can do wonders for a suspenseful scene that one typically sees in movies when a character is hacking a bank or a highly restricted organization but I don't want to base my movie on hacking this simply because of a useful resource I found on the web.