At key junctions for digital traffic in the country, the German foreign intelligence agency has set up its own technical accesses. They work like a police inspection on the Autobahn: A portion of the data stream is diverted to a parking lot and checked. Copies of the flagged-down data are directly forwarded to BND headquarters in Pullach, near Munich, where they are more carefully examined.
The largest traffic control takes place in Frankfurt, in a data processing center owned by the Association of the German Internet Industry. Via this hub, the largest in Europe, e-mails, phone calls, Skype conversations and text messages flow from regions that interest the BND like Russia and Eastern Europe, along with crisis areas like Somalia, countries in the Middle East, and states like Pakistan and Afghanistan.
German law allows the BND to monitor any form of communication that has a foreign element, be it a mobile phone conversation, a Facebook chat or an exchange via AOL Messenger. For the purposes of "strategic communications surveillance," the foreign intelligence agency is allowed to copy and review 20 percent of this data traffic. There is even a regulation requiring German providers "to maintain a complete copy of the telecommunications."