his book The Codebreakers.
: *
: * One indication of just how sensitive this information is considered on
: * both sides of the Atlantic is the fact that Kahn's publishers in New
: * York and London were put under enormous pressure to censor a great deal
: * of the book. In the main, Kahn simply revealed the existence of the
: * liaison relationship, but when he wrote that the NSA and its British
: * equivalent, the Government Communications Headquarters, "exchange
: * personnel on a temporary basis", he had come too close to revealing
: * the truth.
: *
: * The U.S. government told Kahn to hide the existence of British
: * electronic spies from the American public. Kahn eventually agreed
: * to delete a few of the most sensitive paragraphs describing the
: * exchange of codes, techniques, and personnel with the British
: * government
: *
: * His innocuous few sentences threatened to disclose a larger truth.
: *
: * By the 1960s the "temporary" British personnel at Fort Meade had
: * become a permanent fixture. The British enjoyed continued access
: * to the greatest listening post in the world.
: *
: * The NSA is a giant vacuum cleaner. It sucks in every form of
: * electronic communication. from