If you look at the source code of the "Simple Copybot Defeater" and the variants that have sprung up, you can see that its just a repeating sensor ping, making lists of people, messaging them until they click on it. (again, with variants)
How many of these wide area pings will it take to lag out a Sim?
Since the script doesn't actually defeat anything, except the Sim itself... Hmmmm, I guess if one of the users was actually running CopyBot, they *would* be defeated.
Nevermind! Carry on your unknowing attack on our grids, CopyBot Defeater users! You ARE winning!