Glenn Greenwald: how the NSA tampers with US-made internet routers

The NSA has been covertly implanting interception tools in US servers heading overseas – even though the US government has warned against using Chinese technology for the same reasons, says Glenn Greenwald, in an extract from his new book about the Snowden affair, No Place to Hide

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A June 2010 report from the head of the NSA's Access and Target Development department is shockingly explicit. The NSA routinely receives – or intercepts – routers, servers and other computer network devices being exported from the US before they are delivered to the international customers.

The agency then implants backdoor surveillance tools, repackages the devices with a factory seal and sends them on. The NSA thus gains access to entire networks and all their users. The document gleefully observes that some "SIGINT tradecraft … is very hands-on (literally!)".

Eventually, the implanted device connects back to the NSA. The report continues: "In one recent case, after several months a beacon implanted through supply-chain interdiction called back to the NSA covert infrastructure. This call back provided us access to further exploit the device and survey the network."

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