US President Ronald Reagan was shown "WarGames" (1983) at Camp David the weekend it was released. He loved the movie but it also freaked him out. A few days later, at a White House meeting that included the chairman of the Joint Chiefs of Staff, Reagan asked, “Could something like this really happen? Could someone break into our most sensitive computers?”
The answer came back a week later: “Mr. President, the problem is much worse than you think.” That led not only to a significant revamp of how computer security was handled at the Defense Department, but also passage of an anti-hacking law that would eventually evolve into US Computer Fraud and Abuse Act, 1986. Clips of "WarGames" (1983) were shown during the congressional hearings where lawmakers debated the need for hacking legislation.
("How Sci-Fi Like ‘WarGames’ Led to Real Policy During the Reagan Administration", Kevin Bankston, New America, 2018)
P.S: On this day, 43 years ago, John Badham's "WarGames" (1983) premiered at the Cannes Film Festival, France.