The Five Eyes members share listening posts and much of the signals intelligence they collect. This global data collection wouldn’t be possible without the collaboration of the state intelligence agencies of Britain, Canada, Australia and New Zealand. The system collects a massive volume of information: phone calls, satellite communications, emails, internet traffic, webcam images, billions of mobile phone location records and tens of billions of text messages every day. An NSA analyst sitting in an office in Fort Meade, Maryland, receives signals from radio interception antennae in Tangimoana and taps on subsea internet cables on the bed of the Sea of Okhotsk. The physical infrastructure alone operates at a Promethean scale: a network of satellite monitoring facilities shielded by radomes stretching from Point Barrow on the Arctic coast of Alaska to the Rideau River in eastern Ontario to the Hartland Peninsula on the north coast of Devon to Kojarena in Western Australia to the Waihopai Valley on New Zealand’s South Island. The sheer extent of the global surveillance system overseen by the US and its allies made it difficult to hide. T he existence of the Five Eyes wasn’t officially acknowledged until 2010, but accounts of its activities have been circulating for years.