The first Federal laws against hacking and computer crimes was a direct reaction to the movie War Games (1983).

From Wikipedia:

President Ronald Reagan, a family friend of Lasker's, watched the film and discussed the plot with members of Congress, his advisers, and the Joint Chiefs of Staff. Reagan ordered a full national security review. Within a week, the Joint Chiefs of Staff returned an answer: "Yes, the premise was technically possible". 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.