Clifford Stoll, a computer system administrator and former astronomer, tracks down a hacker who infiltrated the Lawrence Berkeley Lab's system, leading him on a cross-country chase from California to Germany, where the hacker is revealed to be selling secrets to the KGB.
The KGB, the Computer and Me
In 1986, a 75-cent discrepancy in computer charges at the Lawrence Berkeley Laboratory led to a gripping cybersecurity investigation by Clifford Stoll, a former astronomer turned computer scientist.