Jonny Lee Miller Dade Murphy / 'Crash Override' / 'Zero Cool' Angelina Jolie Kate Libby / 'Acid Burn' Jesse Bradford Joey Pardella Matthew Lillard Emmanuel Goldstein / 'Cereal Killer' Renoly Santiago Ramon Sanchez / 'Phantom Phreak' Fisher Stevens Eugene Belford / 'The Plague' / Mr. Babbage Alberta Watson Lauren Murphy Lorraine Bracco Margo Laurence Mason Paul Cook / 'Lord Nikon' Wendell Pierce S.S. Agent Richard Gill Michael Gaston S.S. Agent Bob Marc Anthony S.S. Agent Ray Penn Jillette Hal Peter Y. Kim Blade Darren Lee Razor Liza Walker Laura Ethan Browne Curtis Felicity Huffman Attorney Paul Klementowicz Michael Murphy Richard Ziman Judge William DeMeo Jock Johnny Myers 1st Sysop Technician Kevin Brewerton 2nd Sysop Technician Sam Douglas English Teacher Kal Weber 1st V.P. Nancy Ticotin Phreak's Mom Naoko Mori Tokyo Hacker Ravil Isyanov Russian Hacker Olegar Fedoro Russian Hacker Jennifer Badger 'Cyberspirits' and Skaters Michael Potts Tow Truck Driver Mick O'Rourke Phone Repairman Ricco Ross Second Reporter