Real World article
(written from a Production point of view)

The Galactic Computer Network was a computer network referenced in a draft of the script ofthe Star Trek: The Next Generation episode "Coming of Age". This script revealed that Mordock was a legend on the Galactic Computer Network thanks to his Mordock Strategy, which was in turn revealed as a move in Benzite chess. It seems to have been intended as a 24th century equivalent of the internet.