War Games (1983)

WarGames is a 1983 American Cold War science fiction film written by Lawrence Lasker and Walter F. Parkes and directed by John Badham. The film stars Matthew Broderick, Dabney Coleman, John Wood, and Ally Sheedy. The film follows David Lightman (Broderick), a young hacker who unwittingly accesses WOPR (War Operation Plan Response), a United States military supercomputer originally programmed to predict possible outcomes of nuclear war. Lightman gets WOPR to run a nuclear war simulation, believing it to be a computer game. The computer, now tied into the nuclear weapons control system and unable to tell the difference between simulation and reality, attempts to start World War III.

WarGames was nominated for three Academy Awards — Best Cinematography (William A. Fraker), Sound (Michael J. Kohut, Carlos Delarios, Aaron Rochin, Willie D. Burton), and Writing, Screenplay Written Directly for the Screen (Lawrence Lasker, Walter F. Parkes). The company that provided the large screens used to display the tactical situations seen in the NORAD set employed a new design that was super-bright enabling the displays to be filmed live. (The set was more visually impressive than the actual NORAD facilities at the time.) The animations seen on the NORAD displays, produced by Colin Cantwell, were created using Hewlett Packard HP 9845C computers driving monochrome HP 1345A vector displays, which were still-filmed through successive color-filters. Each frame took approximately one minute to produce, and 50,000 feet of negatives were produced over seven months. The animations were projected "live" onto the screens from behind using 16mm film, so they were visible to the actors and no post-production work was needed.[18] For this, the company was awarded an Academy Scientific and Technical Award.

President Reagan, a family friend of Lasker, watched the film and discussed the plot with members of Congress, his advisers, and the Joint Chiefs of Staff; Reagan's interest in the film is credited with leading to the enactment 18 months later of NSDD-145, the first Presidential Directive on computer security.
https://en.wikipedia.org/wiki/WarGames