What your hacker can and cannot do is far more important than what he/she says. Your hacker can have perfectly written dialogue, but if he hacks into the GPS s

What your hacker can and cannot do is far more important than what he/she says. Your hacker can have perfectly written dialogue, but if he hacks into the GPS system of a Cadillac and turns it into a remote-control car it's not going to matter. A lot of Hollywood screen-writers use computers as a form of magic to get around plot difficulties. Say your heroes meet a bunch of aliens and you don't want to dedicate a 30 second montage to the months or years-long process of a team of linguists learning to communicate (badly) with them. Have your hacker set up a nice translation program on his special unobtanium-core uber-computer and, presto! When those aliens turn out to be not so nice, again the hacker can save the day by slicing into their mainframe and blowing up their mother-ship with a mac virus! You get the idea. You can pick up all the hacker language you want, but if you don't pick up some real knowledge (or run your plots past real hackers) you're going to make the same mistakes practically every other Hollywood screenwriter does.