
Police officers practice their firearm skills on a shooting range, so why shouldn't government computer security experts have the same kind of training ground? The Defense Advanced Research Projects Agency wants to build something along the lines of The Matrix or Star Trek's holodeck to test cyberwar strategies and drill cyberwarriors. DARPA is not aiming for a visually immersive world to entertain people; rather, it wants a place to pit hackers against simulated machines.