During the Cold War the world of espionage (intelligence collection and analysis)

During the Cold War the world of espionage (intelligence collection and analysis) was transformed by technology, from wiretapping to satellites, as basic human intelligence (HUMINT) was accentuated by information gathered through signal intelligence (SIGINT) and imagery intelligence (IMINT).  Cyber represents the latest technological frontier in the world of espionage.  Based on Part I of Buchanan's The Hacker and the State, what would you conclude are the most important ways in which cyber has impacted the world of espionage?