The Puzzle Palace(ISBN=9780140067484) caj kindle 百度云 azw3 夸克云 下载 pdb pdf

　　Describes and assesses the activities of the National Security

Agency, the nation's most secret government agency--established in

secrecy, many times larger than the CIA, and in control of a huge

budget and a vast technology.

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　　In 1947, the governments of the United States, the United

Kingdom, Canada, Australia, and New Zealand signed a secret treaty

in which they agreed to cooperate in matters of signals

intelligence. In effect, the governments agreed to pool their

geographic and technological assets in order to listen in on the

electronic communications of China, the Soviet Union, and other

Cold War bad guys--all in the interest of truth, justice, and the

American Way, naturally. The thing is, the system apparently

catches everything. Government security services, led by the U.S.

National Security Agency, screen a large part (and perhaps all) of

the voice and data traffic that flows over the global

communications network. Fifty years later, the European Union is

investigating possible violations of its citizens' privacy rights

by the NSA, and the Electronic Privacy Information Center, a public

advocacy group, has filed suit against the NSA, alleging that the

organization has illegally spied on U.S. citizens.

　　Being a super-secret spy agency and all, it's tough to get a

handle on what's really going on at the NSA. However, James Bamford

has done great work in documenting the agency's origins and Cold

War exploits in The Puzzle Palace. Beginning with the earliest days

of cryptography (code-making and code-breaking are large parts of

the NSA's mission), Bamford explains how the agency's predecessors

helped win World War II by breaking the German Enigma machine and

defeating the Japanese Purple cipher. He also documents signals

intelligence technology, ranging from the usual collection of spy

satellites to a great big antenna in the West Virginia woods that

listened to radio signals as they bounced back from the surface of

the moon.

　　Bamford backs his serious historical and technical material (this

is a carefully researched work of nonfiction) with warnings about

how easily the NSA's technology could work against the democracies

of the world. Bamford quotes U.S. Senator Frank Church: "If this

government ever became a tyranny ... the technological capacity

that the intelligence community has given the government could

enable it to impose total tyranny, and there would be no way to

fight back, because the most careful effort to combine together in

resistance to the government ... is within the reach of the

government to know." This is scary stuff. --David Wall

书籍介绍

Describes and assesses the activities of the National Security Agency, the nation's most secret government agency--established in secrecy, many times larger than the CIA, and in control of a huge budget and a vast technology.