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Profile: UUNET

UUNET was a participant or observer in the following events:

Senior AT&T technician Mark Klein (see July 7, 2009), working near the National Security Agency (NSA)‘s “secret room” in the firm’s Folsom Street, San Francisco facility (see October 2003), receives two documents pertaining to the equipment in that secret room. (In a 2007 interview with PBS, Klein will cite a third document as well, that he found lying on top of a router.) The two documents are entitled “SIMS Splitter Cut-In and Test Procedure Issue 2, 01/12/03” and “SIMS Splitter Cut-In and Test Procedure OSWF Training Issue 2 January 24, 2002.” “OSWF” stands for “On-Site Work Force.” As for “SIMS,” all Klein knows is that it is an acronym associated with the secret room. Reading over the documents, Klein realizes that they indicate the secret room contains a “splitter cabinet,” installed in February 2003 (see February 2003), containing “optical splitters” that “cut in” to signals sent through 16 “Peering Links” between AT&T and 16 other major carriers and Internet exchange points. He later recalls: “I brought them back to my desk, and when I started looking at it, I looked at it more, and I looked at it more, and finally it dawned on me sort of all at once, and I almost fell out of my chair, because this showed, first of all, what they had done, that they had taken working circuits, which had nothing to do with a splitter cabinet, and they had taken in particular what are called peering links which connect AT&T’s network with the other networks. It’s how you get the Internet, right? One network connects with another. So they took 16 high-speed peering links which go to places like Qwest [Communications] and Palo Alto Internet Exchange and places like that.… These circuits were working at one point, and the documents indicated in February 2003 they had cut into these circuits so that they could insert the splitter so that they can get the data flow from these circuits to go to the secret room. So this data flow meant that they were getting not only AT&T customers’ data flow; they were getting everybody else’s data flow, whoever else might happen to be communicating into the AT&T network from other networks. So it was turning out to be like a large chunk of the network, of the Internet.” The documents, he later says, name “the circuit IDs… the companies they belong to… [and] the cut date. And they were all in February [2003], when they were cut into the splitter” (see February 2003). The 16 carriers include ConXion, Verio, XO, Genuity, Qwest, PAIX (Palo Alto Internet Exchange), Allegiance, Abovenet, Global Crossing, C&W, UUNET, Level 3, Sprint, Telia, PSINet, and MAE West (the Metropolitan Area Exchange for AT&T’s Western region). In plain English, the splitter in the NSA room is duplicating the electronic data being sent through AT&T’s equipment, and sending the duplicated signals somewhere else, presumably to NSA computers for later processing. Klein is given the documents by a veteran AT&T technician who is preparing to retire. Klein, in a casual conversation with the colleague who gave him the documents, remarks, “It seems obvious to me, given that the secret room is next to the 4ESS (see January 2003), that they’re listening to phone calls.” Klein’s colleague shakes his head and says: “No, Internet.… I’ll show you.” (In 2007 Klein will learn from a telecommunications expert that since AT&T was transferring its long-distance telephone traffic onto Internet fiber cables, the splitter was most likely picking up both telephone and Internet traffic.) Klein’s colleague shows him the cabinet containing the splitters. Klein later tells a reporter: “[T]here were optical splitters, which basically were connected by fiber-optic cable down to the secret room on the sixth floor.… The analogy I can give you, which most people are familiar with is, say you get cable TV in your living room and then want to watch all the channels you get in the living room, you want to get all those same channels in your bedroom. So they install on the cable what they call a splitter, which splits off all the signals, duplicates of the same signals which go to the bedroom.… What the splitter does is make a duplicate copy of all the signals going across the fiber-optic cables.… We’re talking about billions and billions of bits of data going across every second, right? And it’s going into the router, and it’s coming back from the routers in that office. So what they do with the splitter is they intercept that data stream and make copies of all the data, and those copies go down on the cable to the secret room.” Klein confirms from his colleague and from the documents that show the splitters are connected directly to the equipment in the secret room. (PBS Frontline 5/15/2007; Klein 2009, pp. 34-35)

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