iferation. The Snowden breach was not without precedent at the NSA. There had been two Russian spies at the NSA during the Cold War, Jack Dunlap and David Sheldon Boone, who took a limited number of documents, but no one since the end of the Cold War is known to have taken a single NSA classified document. Now an ins

uited after he retired from the NSA. After he was betrayed by a KGB double agent in 1985, he was sentenced to life imprison- ment. Finally, there was David Sheldon Boone, an NSA code clerk, who between 1988 and 1992 provided the KGB with NSA docu- ments in return for $60,000. Boone, sentenced to twenty-four years in p

recruited after he retired from the NSA. After he was betrayed by a KGB double agent in 1985, was sentenced to life imprisonment, Finally, there was David Sheldon Boone, a NSA code clerk, who between 1988 and 1992, provided the KGB with NSA documents in return for $60,000. Boone, sentenced to 24 years in prison, was

found dead of...” Edward Jay Epstein, “The Spy Wars,” New York Times, September 28, 1980 . “Robert Lipka, a clerk...”—See Robert Lipka Appendix A “ David Sheldon Boone...”—See David Boone, Appendix A “Harold Nicholson, the CIA’s deputy...”— Elizabeth Farnsworth, “Update on the Case of CIA Agent Harold Nicholson,” P