Now wanted for murder and thought to be Ruth Marx, Bennett hitchhikes to Cathedral's office where, using her impostor's computer, she connects the cyberterrorists to Gregg Microsystems and uncovers their scheme: once the Praetorians sabotage an organization's computer system, Gregg sells Gatekeeper to it and gains unlimited access through the backdoor. Bennett emails evidence of the backdoor and Gregg's involvement with the Praetorians to the FBI from the Moscone Center and tricks Devlin into releasing a virus into Gregg's mainframe, destroying Gatekeeper and undoing the erasing of her identity. During a battle on the catwalks of the convention center, in which Devlin accidentally kills the Bennett impostor from Cathedral Software (the real Ruth Marx), Bennett ambushes Devlin with a fire extinguisher, causing him to fall to his death. Bennett regains her identity, home, and life. She then reunites with her mother, and the conspiracy is exposed, with Jeff Gregg being arrested by the FBI.