The Cuckoo's Egg: Tracking a Spy Through the Maze of Computer Espionage

Cliff Stoll was an astronomer turned systems manager at Lawrence Berkeley Lab when a 75-cent accounting error alerted him to the presence of an unauthorized user on his system. The hacker's code name was "Hunter" -- a mystery invader hiding inside a twisting electronic labyrinth, breaking into U.S. computer systems and stealing sensitive military and security information. Stoll began a one-man hunt of his own, spying on the spy -- and plunged into an incredible international probe that finally gained the attention of top U.S. counterintelligence agents. The Cuckoo's Egg is his wild and suspenseful true story -- a year of deception, broken codes, satellites, missile bases, and the ultimate sting operation -- and how one ingenious American trapped a spy ring paid in cash and cocaine,and reporting to the KGB.

A sentimental favorite, The Cuckoo's Egg seems to have inspired a whole category of books exploring the quest to capture computer criminals. Still, even several years after its initial publication and after much imitation, the book remains a good read with an engaging story line and a critical outlook, as Clifford Stoll becomes, almost unwillingly, a one-man security force trying to track down faceless criminals who've invaded the university computer lab he stewards. What first appears as a 75-cent accounting error in a computer log is eventually revealed to be a ring of industrial espionage, primarily thanks to Stoll's persistence and intellectual tenacity.

Astrophysicist Stoll's pursuit of a hacker trying to access American computer networks led to the discovery of a West German spy ring. "A quest that reads with the tension and excitement of a fictional thriller," asserted PW . "Although best appreciated by the computer literate, even illiterates should be able to follow the technical complexities with little difficulty."