AT&T technician Mark Klein learned of a secret room installed in the company's San Francisco internet switching center ... what he saw and learnt prompted him to call at the Electronic Frontier Foundation unannounced in late January 2005 with documents in hand. The EFF was already preparing a class-action lawsuit against AT&T for allegedly turning over customer phone-record data to the NSA -- relying on reporting from the Los Angeles Times about AT&T giving the NSA access to a phone-record database with 1.88 trillion entries. More here at Wired. Now a heavily redacted 40 page document document by internet expert J. Scott Marcus has been supplied and is available here. PDF Alert !! 40 pages. Briefly Marcus says, based on the Klein documents, his experience, knowledge of AT&T and understanding of what equipment is available that .. The AT&T documents that Klein supplied are genuine. There could be 35 - 40 such rooms throughout the US. The internet surveillance program covers domestic traffic not only just international traffic.Most International traffic enters the US through only 3 points Florida New York and San Francisco. Marcus notes that the AT&T spy rooms are "in far more locations than would be required to catch the majority of international traffic" The system is capable of looking at content, not just addresses. The configuration described in the Klein documents -- presumably the Narus software in particular -- "exists primarily to conduct sophisticated rule-based analysis of content", Marcus concludes. The system looks at all traffic not just AT&T but those transiting AT&T networks. Want to check to see of your Internet packets are being "sniffed" by AT&T. First. A little history. Continue.