In other words,
You try to hack, Engine finds you, reports you to Nexon, you get anally raped.
'Nuff said.
And not to mention that Engine.exe can take screenshots of your desktop....
So does VAC2 and Punkbuster, they do the same thing, also Hackshield also become a spyware scanning your computer for hacks, if stated under the TOs that Hackshield will scan and logs in keystrokes then you click 'I accept' then there is nothing you can do, I mean what are they going to steal? Your Nexon account? Pfft.