This Is The True Story Of How A Systems Manager At Lawrence Berkeley Lab Singlehandedly Tracked Down And Helped Capture A Computer Hacker Who Had Been Breaking Into U.s. Computer Systems And Stealing Sensitive Military And Security Information. 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.