1972
Scope of NSA's SIGINT activities was redefined in Communication Intelligence and Electronic Intelligence and Communication Security (In the 80s the term changed to Information Security).
Perry Fellwock, former NSA analyst, gives an interview for Ramparts on NSA electronic interception: http://jya.com/nsa-elint.htm
http://en.wikipedia.org/wiki/SIGINT
Pokemony
Scope of NSA's SIGINT activities was redefined in Communication Intelligence and Electronic Intelligence and Communication Security (In the 80s the term changed to Information Security).
Perry Fellwock, former NSA analyst, gives an interview for Ramparts on NSA electronic interception: http://jya.com/nsa-elint.htm
http://en.wikipedia.org/wiki/SIGINT
Pokemony