The Snowden revelations revealed that the NSA is carrying out electronic surveillance on a global scale. But it also unveiled the shadowy networks of intelligence agencies that act as accomplices.
When people think of mass surveillance, they rightly think of the NSA, but nearly every country in the world has its own signals intelligence (SIGINT) agency. From the UK’s GCHQ to Germany’s BND, these organizations focus on intelligence gathering, counterintelligence operations, and law enforcement by intercepting communications and other electronic signals. SIGINT covers a wide range of activities, from tapping phones to accessing a user’s email database with XKEYSCORE. Typically, one of the few legal restrictions set upon these agencies is that they cannot spy on their own citizens. This creates a strong incentive for them to cooperate and trade information. The 5 Eyes, 9 Eyes, and 14 Eyes are the largest and most important agreements that create the legal framework for such coordinated activity.
All SIGINT agencies rely on the cooperation of telecommunication companies and internet service providers to gain access to individuals’ private data. By installing fiber-optic splitters at ISP junction points, the SIGINT agency is able to make an exact copy of the data being processed at that point. This data is then analyzed using deep packet inspection and stored at different data centers.