The Net is a 1995 cyber thriller film directed by Irwin Winkler and featuring Sandra Bullock, Jeremy Northam and Dennis Miller.
The film opens with United States Undersecretary of Defense Michael Bergstrom (Ken Howard), who commits suicide after discovering that he has tested positive for HIV.
Angela Bennett (Sandra Bullock) is a Venice, California systems analyst who telecommutes to Cathedral Software in San Francisco. Her interpersonal relationships are completely online and on the phone, limiting interactions with neighbors, and her mother (Diane Baker) who is institutionalized with Alzheimer's disease. Bennett's coworker Dale sends her a floppy disk with a backdoor, labeled with "π", to a commonly used computer security system called "Gatekeeper" sold by Gregg Microsystems.