GCHQ The Secret Wireless War, 1900?1986【電子書籍】[ Nigel West ]

＜p＞＜strong＞The go-to intelligence expert and author of ＜em＞MI6＜/em＞ has "provided the clearest review of GCHQ and its predecessors in a publicly available book" ( ＜em＞Firetrench＜/em＞).＜/strong＞＜br /＞ Signal intelligence is the most secret, and most misunderstood, weapon in the modern espionage arsenal. As a reliable source of information, it is unequalled, which is why Government Communications Headquarters, almost universally known as GCHQ, is several times larger than the two smaller, but more familiar, organizations, MI5 and MI6. Because of its extreme sensitivity, and the ease with which its methods can be compromised, GCHQ's activities remain cloaked in secrecy.＜br /＞ In ＜em＞GCHQ: The Secret Wireless War 1900-1986＜/em＞, the renowned expert Nigel West traces GCHQ's origins back to the early days of wireless and gives a detailed account of its development since that time. From the moment that Marconi succeeded in transmitting a radio signal across the Channel, Britain has been engag．．．楽天市場のショップで商品詳細の続きを見る