Evidence From AT&T Whistle-Blower

The three page article in Wired News lays out what Former AT&T technician Mark Klein says is the evidence that AT&T cooperated with the NSA. I will give you a few excerpts, but you need to read all of it.

(Wired)In 2003 AT&T built "secret rooms" hidden deep in the bowels of its central offices in various cities, housing computer gear for a government spy operation which taps into the company's popular WorldNet service and the entire internet. These installations enable the government to look at every individual message on the internet and analyze exactly what people are doing
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In San Francisco the "secret room" is Room 641A at 611 Folsom Street, the site of a large SBC phone building, three floors of which are occupied by AT&T. High-speed fiber-optic circuits come in on the 8th floor and run down to the 7th floor where they connect to routers for AT&T's WorldNet service, part of the latter's vital "Common Backbone." In order to snoop on these circuits, a special cabinet was installed and cabled to the "secret room" on the 6th floor to monitor the information going through the circuits. (The location code of the cabinet is 070177.04, which denotes the 7th floor, aisle 177 and bay 04.) The "secret room" itself is roughly 24-by-48 feet, containing perhaps a dozen cabinets including such equipment as Sun servers and two Juniper routers, plus an industrial-size air conditioner.
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Another "Cut-In and Test Procedure" document dated January 24, 2003, provides diagrams of how AT&T Core Network circuits were to be run through the "splitter" cabinet (PDF 7). One page lists the circuit IDs of key Peering Links which were "cut-in" in February 2003 (PDF 8), including ConXion, Verio, XO, Genuity, Qwest, PAIX, Allegiance, AboveNet, Global Crossing, C&W, UUNET, Level 3, Sprint, Telia, PSINet and Mae West. By the way, Mae West is one of two key internet nodal points in the United States (the other, Mae East, is in Vienna, Virginia). It's not just WorldNet customers who are being spied on -- it's the entire internet.

A lot of it is technical talk. I didn't understand much of it, but the part I did understand is slightly frightening.