No, it's not japanese. the movie is based on a book called "Takedown: The capture of kevin Mitnik" and the guy who wrote is is actually the guy that helped the FBI to catch him. He is an asian man who worked as a communications expert for a cell phone company and became obsessive over catching mitnik after his computers were hacked. The worm that is the core object of the plot in the movie is actually fictional and wasn't in the book.