美国国家安全局（National Security Agency）最近解密了一份特工培训手册，培训他们运用公开搜索引擎进行调查。
http://www.nsa.gov/public_info/_files/Untangling_the_Web.pdf?utm_source=Triggermail&utm_medium=email&utm_term=10%20Things%20In%20Tech%20You%20Need%20To%20Know&utm_campaign=Post%20Blast%20%28sai%29%3A%2010%20Things%20You%20Need%20To%20Know%20This%20Morning
http://www.nsa.gov/public_info/_files/Untangling_the_Web.pdf?utm_source=Triggermail&utm_medium=email&utm_term=10%20Things%20In%20Tech%20You%20Need%20To%20Know&utm_campaign=Post%20Blast%20%28sai%29%3A%2010%20Things%20You%20Need%20To%20Know%20This%20Morning
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