Stoll found a microscopic discrepancy in the accounting of a computer he was in charge of, and he got curious what might be the root cause.
He (a FORTH-programming raido astronomer) than discovered that a hacker was in "his" computer, and he followed him around the world (through the network).
The hacker, a person with links to communism from Germany, later committed suicide.
The fellow who committed suicide, Karl Koch, was only one part of a group of four. The person who was actually caught with Cliffs help was Markus Hess.
He (a FORTH-programming raido astronomer) than discovered that a hacker was in "his" computer, and he followed him around the world (through the network).
The hacker, a person with links to communism from Germany, later committed suicide.