This is a great Nova program with Clifford Stoll reenacting his role from his famous book "The Cuckoo's Egg."
I saw this TV program in this story before reading the book. Coming from a UNIX background it was fun to see a system I recognized. It could have been titled "The story of Ping" oops that title has been taken. I remember being billed for time on the computer and could only gain access at 2 AM. Many of these skills are now lost to people that do not have a shell account. I especially like how they kept the intruder on the line long enough to track. The hunt was intriguing, and it makes you wonder what is happening today. While this book deals with such things as passwords, the many new avenues created on today's Internet may afford a newer mystery. Until then this is the classic.
A student, Clifford Stoll, managing the computer at Berkley notices an unusual charge, $0.75, to an account. He finds that someone is hacking before it was fashionable; probably before there was Veronica. To track down the culprit(s) he must first learn the tracking skills. This process is in its infancy, so he must even invent a few of the skills himself. The use of timing and knowledge of the speed of light allows for a good guess at the distance. The only way to go through the old timing switching stations was to hold the intruder online long enough. This required the creation of a dummy database with intriguing information.
Who is the mysterious intruder(s)?
Will they be caught?