A very interesting article on how the NSA ensures it has access to all cellphones worldwide:
Codenamed AURORAGOLD, the covert operation has monitored the content of messages sent and received by more than 1,200 email accounts associated with major cellphone network operators, intercepting confidential company planning papers that help the NSA hack into phone networks.
One high-profile surveillance target is the GSM Association, an influential U.K.-headquartered trade group that works closely with large U.S.-based firms including Microsoft, Facebook, AT&T, and Cisco, and is currently being funded by the U.S. government to develop privacy-enhancing technologies.
Karsten Nohl, a leading cellphone security expert and cryptographer who was consulted by The Intercept about details contained in the AURORAGOLD documents, said that the broad scope of information swept up in the operation appears aimed at ensuring virtually every cellphone network in the world is NSA accessible.
“Collecting an inventory [like this] on world networks has big ramifications,” Nohl said, because it allows the NSA to track and circumvent upgrades in encryption technology used by cellphone companies to shield calls and texts from eavesdropping. Evidence that the agency has deliberately plotted to weaken the security of communication infrastructure, he added, was particularly alarming.
“Even if you love the NSA and you say you have nothing to hide, you should be against a policy that introduces security vulnerabilities,” Nohl said, “because once NSA introduces a weakness, a vulnerability, it’s not only the NSA that can exploit it.”
This provides a link to a series of documents held by The Intercept on surveillance technologies.