Timeline of Snowden disclosures

This is the timeline of the global surveillance disclosures that began in 2013. The disclosures have been largely instigated by revelations from Edward Snowden, a former National Security Agency contractor.

2012 In April 2012, Defense contractor Edward Snowden began downloading sensitive Western intelligence material while working for the American computer corporation Dell. By the end of the year, Snowden had made his first contact with journalist Glenn Greenwald of The Guardian.

January–May 2013 In January 2013, Snowden contacted documentary filmmaker Laura Poitras. In March 2013, Snowden took up a new job at Booz Allen Hamilton in Hawaii, specifically to gain access to additional top-secret documents that could be leaked. In April 2013, Poitras asked Greenwald to meet her in New York City. In May 2013, Snowden was permitted temporary leave from his position at the NSA in Hawaii, on the pretext of receiving treatment for epilepsy. Towards the end of May, Snowden flew to Hong Kong.

June 2013 After the U.S.-based editor of The Guardian held several meetings in New York City, it was decided that Greenwald, Poitras, and The Guardian's defence and intelligence correspondent Ewen MacAskill would fly to Hong Kong to meet Snowden. On June 5, in the first media report based on the leaked material, The Guardian exposed a top secret court order showing that the NSA had collected phone records from over 120 million Verizon subscribers. Under the order, the numbers of both parties on a call, as well as the location data, unique identifiers, time of call, and duration of call were handed over to the FBI, which turned over the records to the NSA. According to The Wall Street Journal, the Verizon order is part of a controversial data program, which seeks to stockpile records on all calls made in the U.S., but doesn't collect information directly from T-Mobile USA and Verizon Wireless, in part because of their foreign ownership ties. On June 7, 2013, the second media disclosure, the revelation of the PRISM surveillance program, was published simultaneously by The Guardian and The Washington Post. Documents provided by Snowden to Der Spiegel revealed how the NSA spied on various diplomatic missions of the European Union (EU) including the EU's delegation to the United States in Washington D.C., the EU's delegation to the United Nations in New York, and the Council of the European Union in Brussels, as well as the United Nations Headquarters in New York. During specific episodes within a four-year period, the NSA hacked several Chinese mobile phone companies, the Chinese University of Hong Kong, and Tsinghua University in Beijing, and the Asian fiber-optic network operator Pacnet. Only Australia, Canada, New Zealand, and the UK are explicitly exempted from NSA attacks, whose main target in the EU is Germany. A method of bugging encrypted fax machines used at an EU embassy is codenamed Dropmire. During the 2009 G-20 London summit, the British intelligence agency Government Communications Headquarters (GCHQ) intercepted the communications of foreign diplomats. In addition, the GCHQ has been intercepting and storing mass quantities of fiber-optic traffic via Tempora. Two principal components of Tempora are called "Mastering the Internet" (MTI) and "Global Telecoms Exploitation". The data is preserved for three days while metadata is kept for thirty days. Data collected by the GCHQ under Tempora is shared with the National Security Agency (NSA) of the United States. From 2001 to 2011, the NSA collected vast amounts of metadata records detailing the email and internet usage of Americans via Stellar Wind, which was later terminated due to operational and resource constraints. It was subsequently replaced by newer surveillance programs such as ShellTrumpet, which "processed its one trillionth metadata record" by the end of December 2012. According to the Boundless Informant, over 97 billion pieces of intelligence were collected over a 30-day period ending in March 2013. Out of all 97 billion sets of information, about 3 billion data sets originated from U.S. computer networks and around 500 million metadata records were collected from German networks. Several weeks later, it was revealed that the Bundesnachrichtendienst (BND) of Germany transfers massive amounts of metadata records to the NSA.

July 2013 According to the Brazilian newspaper O Globo, the NSA spied on millions of emails and calls of Brazilian citizens, while Australia and New Zealand have been involved in the joint operation of the NSA's global analytical system XKeyscore. Among the numerous allied facilities contributing to XKeyscore are four installations in Australia and one in New Zealand:

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