... Description of document: A History of U.S. Communications Security (Volumes I a... ... Description of document: A History of U.S. Communications Security (Volumes I and II); ... ...: 23-December-2007 Released date: 10-December-2008 Posted date: 24-December-2008 Source of document: National Security Agency Attn: FOIA/PA ... ...Ft. George G. Meade, MD 20755-6248 Phone: (301)-688-6527 Fax: (443)-479-3612 Note: The meat of the material left after redaction starts at (PDF) ... ...0 Serial: MDR-54498 10 December 2008 This responds to your request of 23 December 2007 to have A History of U.S. Communications Security (2 volumes) b... ... fact that almost all of our voice communications are sent in the clear.'the business of finding economical secure ways to secure voice transmissions ... ...printers were much quieterin the first place? Behind these events and questions lies a very long history beginning with the discovery of a pouible thr... ... at great costand-in mostenvironments-with considerable risk. , 3. There remain a number of more economical ways for hostile SIGINT to recover intelli... ...y to Itrateaic aDd tactical militarY operations but to the fields of diplomacy, tecbnolol)', aDd economic warfare as well. In fact, it extends to almo...

...This publication consists of a series of lectures prepared and given to interns and other employees by Mr. David G. Boak in 1966. Mr. Boak is uniquely qualified to discuss the history of the US COM_SEC because he has participated significantly in most...