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The US intelligence community’s broadest surveillance authorities are enshrined in Executive Order 12333, which primarily covers the interception of electronic communications overseas. The Order authorizes the collection, retention, and dissemination of “foreign intelligence” information, which includes information “relating to the capabilities, intentions or activities of foreign powers, organizations or persons.” In other words, so long as they are operating outside the US, intelligence agencies are authorized to collect information about any foreign person — and, of course, any Americans with whom they communicate. The NSA has conceded that EO 12333 is the basis of most of its surveillance. While public information about these programs is limited, a few highlights give a sense of the breadth of EO 12333 operations: The NSA gathers information about every cell phone call made to, from, and within the Bahamas, Mexico, Kenya, the Philippines, and Afghanistan, and possibly other countries. A joint US-UK program tapped into the cables connecting internal Yahoo and Google networks to gather e-mail address books and contact lists from their customers. Another US-UK collaboration collected images from video chats among Yahoo users and possibly other webcam services. The NSA collects both the content and metadata of hundreds of millions of text messages from around the world. By tapping into the cables that connect global networks, the NSA has created a database of the location of hundreds of millions of mobile phones outside the US.

Given its scope, EO 12333 is clearly critical to those seeking serious surveillance reform. The path to reform is, however, less clear. There is no sunset provision that requires action by Congress and creates an opportunity for exposing privacy risks. Even in the unlikely event that Congress was inclined to intervene, it would have to address questions about the extent of its constitutional authority to regulate overseas surveillance. To the best of my knowledge, there is no litigation challenging EO 12333 and the government doesn’t give notice to criminal defendants when it uses evidence derived from surveillance under the order, so the likelihood of a court ruling is slim. The Privacy and Civil Liberties Oversight Board is currently reviewing two programs under EO 12333, but it is anticipated that much of its report will be classified (although it has promised a less detailed unclassified version as well). While the short-term outlook for additional surveillance reform is challenging, from a longer-term perspective, the distinctions that our law makes between Americans and non-Americans and between domestic and foreign collection cannot stand indefinitely. If the Fourth Amendment is to meaningfully protect Americans’ privacy, the courts and Congress must come to grips with this reality.

Despite growing opposition in some quarters to ending the NSA’s program, a “clean” authorization — one that would enable its continuation without any changes — is unlikely, lawmakers from both parties say. Sen. Ron Wyden (D-Ore.), a leading opponent of the NSA’s program in its current format, said he would be “surprised if there are 60 votes” in the Senate for that. In the House, where there is bipartisan support for reining in surveillance, it’s a longer shot still. “It’s a toxic vote back in your district to reauthorize the Patriot Act, if you don’t get some reforms” with it, said Rep. Thomas Massie (R-Ky.). The House last fall passed the USA Freedom Act, which would have ended the NSA program, but the Senate failed to advance its own version.The House and Senate judiciary committees are working to come up with new bipartisan legislation to be introduced soon.

The tech firms and privacy groups’ demands are a baseline, they say. Besides ending bulk collection, they want companies to have the right to be more transparent in reporting on national security requests and greater declassification of opinions by the Foreign Intelligence Surveillance Court.

Some legal experts have pointed to a little-noticed clause in the Patriot Act that would appear to allow bulk collection to continue even if the authority is not renewed. Administration officials have conceded privately that a legal case probably could be made for that, but politically it would be a tough sell. On Tuesday, a White House spokesman indicated the administration would not seek to exploit that clause. “If Section 215 sunsets, we will not continue the bulk telephony metadata program,” National Security Council spokesman Edward Price said in a statement first reported by Reuters. Price added that allowing Section 215 to expire would result in the loss of a “critical national security tool” used in investigations that do not involve the bulk collection of data. “That is why we have underscored the imperative of Congressional action in the coming weeks, and we welcome the opportunity to work with lawmakers on such legislation,” he said.

A huge volume of the Internet data GCHQ collects flows directly into a massive repository named Black Hole, which is at the core of the agency’s online spying operations, storing raw logs of intercepted material before it has been subject to analysis. Black Hole contains data collected by GCHQ as part of bulk “unselected” surveillance, meaning it is not focused on particular “selected” targets and instead includes troves of data indiscriminately swept up about ordinary people’s online activities. Between August 2007 and March 2009, GCHQ documents say that Black Hole was used to store more than 1.1 trillion “events” — a term the agency uses to refer to metadata records — with about 10 billion new entries added every day. As of March 2009, the largest slice of data Black Hole held — 41 percent — was about people’s Internet browsing histories. The rest included a combination of email and instant messenger records, details about search engine queries, information about social media activity, logs related to hacking operations, and data on people’s use of tools to browse the Internet anonymously.

Throughout this period, as smartphone sales started to boom, the frequency of people’s Internet use was steadily increasing. In tandem, British spies were working frantically to bolster their spying capabilities, with plans afoot to expand the size of Black Hole and other repositories to handle an avalanche of new data. By 2010, according to the documents, GCHQ was logging 30 billion metadata records per day. By 2012, collection had increased to 50 billion per day, and work was underway to double capacity to 100 billion. The agency was developing “unprecedented” techniques to perform what it called “population-scale” data mining, monitoring all communications across entire countries in an effort to detect patterns or behaviors deemed suspicious. It was creating what it said would be, by 2013, “the world’s biggest” surveillance engine “to run cyber operations and to access better, more valued data for customers to make a real world difference.”

A document from the GCHQ target analysis center (GTAC) shows the Black Hole repository’s structure.

The data is searched by GCHQ analysts in a hunt for behavior online that could be connected to terrorism or other criminal activity. But it has also served a broader and more controversial purpose — helping the agency hack into European companies’ computer networks. In the lead up to its secret mission targeting Netherlands-based Gemalto, the largest SIM card manufacturer in the world, GCHQ used MUTANT BROTH in an effort to identify the company’s employees so it could hack into their computers. The system helped the agency analyze intercepted Facebook cookies it believed were associated with Gemalto staff located at offices in France and Poland. GCHQ later successfully infiltrated Gemalto’s internal networks, stealing encryption keys produced by the company that protect the privacy of cell phone communications.

Similarly, MUTANT BROTH proved integral to GCHQ’s hack of Belgian telecommunications provider Belgacom. The agency entered IP addresses associated with Belgacom into MUTANT BROTH to uncover information about the company’s employees. Cookies associated with the IPs revealed the Google, Yahoo, and LinkedIn accounts of three Belgacom engineers, whose computers were then targeted by the agency and infected with malware. The hacking operation resulted in GCHQ gaining deep access into the most sensitive parts of Belgacom’s internal systems, granting British spies the ability to intercept communications passing through the company’s networks.

In March, a U.K. parliamentary committee published the findings of an 18-month review of GCHQ’s operations and called for an overhaul of the laws that regulate the spying. The committee raised concerns about the agency gathering what it described as “bulk personal datasets” being held about “a wide range of people.” However, it censored the section of the report describing what these “datasets” contained, despite acknowledging that they “may be highly intrusive.” The Snowden documents shine light on some of the core GCHQ bulk data-gathering programs that the committee was likely referring to — pulling back the veil of secrecy that has shielded some of the agency’s most controversial surveillance operations from public scrutiny. KARMA POLICE and MUTANT BROTH are among the key bulk collection systems. But they do not operate in isolation — and the scope of GCHQ’s spying extends far beyond them.

The agency operates a bewildering array of other eavesdropping systems, each serving its own specific purpose and designated a unique code name, such as: SOCIAL ANTHROPOID, which is used to analyze metadata on emails, instant messenger chats, social media connections and conversations, plus “telephony” metadata about phone calls, cell phone locations, text and multimedia messages; MEMORY HOLE, which logs queries entered into search engines and associates each search with an IP address; MARBLED GECKO, which sifts through details about searches people have entered into Google Maps and Google Earth; and INFINITE MONKEYS, which analyzes data about the usage of online bulletin boards and forums. GCHQ has other programs that it uses to analyze the content of intercepted communications, such as the full written body of emails and the audio of phone calls. One of the most important content collection capabilities is TEMPORA, which mines vast amounts of emails, instant messages, voice calls and other communications and makes them accessible through a Google-style search tool named XKEYSCORE.

As of September 2012, TEMPORA was collecting “more than 40 billion pieces of content a day” and it was being used to spy on people across Europe, the Middle East, and North Africa, according to a top-secret memo outlining the scope of the program. The existence of TEMPORA was first revealed by The Guardian in June 2013. To analyze all of the communications it intercepts and to build a profile of the individuals it is monitoring, GCHQ uses a variety of different tools that can pull together all of the relevant information and make it accessible through a single interface. SAMUEL PEPYS is one such tool, built by the British spies to analyze both the content and metadata of emails, browsing sessions, and instant messages as they are being intercepted in real time. One screenshot of SAMUEL PEPYS in action shows the agency using it to monitor an individual in Sweden who visited a page about GCHQ on the U.S.-based anti-secrecy website Cryptome.

Partly due to the U.K.’s geographic location — situated between the United States and the western edge of continental Europe — a large amount of the world’s Internet traffic passes through its territory across international data cables. In 2010, GCHQ noted that what amounted to “25 percent of all Internet traffic” was transiting the U.K. through some 1,600 different cables. The agency said that it could “survey the majority of the 1,600” and “select the most valuable to switch into our processing systems.”

According to Joss Wright, a research fellow at the University of Oxford’s Internet Institute, tapping into the cables allows GCHQ to monitor a large portion of foreign communications. But the cables also transport masses of wholly domestic British emails and online chats, because when anyone in the U.K. sends an email or visits a website, their computer will routinely send and receive data from servers that are located overseas. “I could send a message from my computer here [in England] to my wife’s computer in the next room and on its way it could go through the U.S., France, and other countries,” Wright says. “That’s just the way the Internet is designed.” In other words, Wright adds, that means “a lot” of British data and communications transit across international cables daily, and are liable to be swept into GCHQ’s databases.

A map from a classified GCHQ presentation about intercepting communications from undersea cables. GCHQ is authorized to conduct dragnet surveillance of the international data cables through so-called external warrants that are signed off by a government minister. The external warrants permit the agency to monitor communications in foreign countries as well as British citizens’ international calls and emails — for example, a call from Islamabad to London. They prohibit GCHQ from reading or listening to the content of “internal” U.K. to U.K. emails and phone calls, which are supposed to be filtered out from GCHQ’s systems if they are inadvertently intercepted unless additional authorization is granted to scrutinize them. However, the same rules do not apply to metadata. A little-known loophole in the law allows GCHQ to use external warrants to collect and analyze bulk metadata about the emails, phone calls, and Internet browsing activities of British people, citizens of closely allied countries, and others, regardless of whether the data is derived from domestic U.K. to U.K. communications and browsing sessions or otherwise. In March, the existence of this loophole was quietly acknowledged by the U.K. parliamentary committee’s surveillance review, which stated in a section of its report that “special protection and additional safeguards” did not apply to metadata swept up using external warrants and that domestic British metadata could therefore be lawfully “returned as a result of searches” conducted by GCHQ.

Perhaps unsurprisingly, GCHQ appears to have readily exploited this obscure legal technicality. Secret policy guidance papers issued to the agency’s analysts instruct them that they can sift through huge troves of indiscriminately collected metadata records to spy on anyone regardless of their nationality. The guidance makes clear that there is no exemption or extra privacy protection for British people or citizens from countries that are members of the Five Eyes, a surveillance alliance that the U.K. is part of alongside the U.S., Canada, Australia, and New Zealand. “If you are searching a purely Events only database such as MUTANT BROTH, the issue of location does not occur,” states one internal GCHQ policy document, which is marked with a “last modified” date of July 2012. The document adds that analysts are free to search the databases for British metadata “without further authorization” by inputing a U.K. “selector,” meaning a unique identifier such as a person’s email or IP address, username, or phone number. Authorization is “not needed for individuals in the U.K.,” another GCHQ document explains, because metadata has been judged “less intrusive than communications content.” All the spies are required to do to mine the metadata troves is write a short “justification” or “reason” for each search they conduct and then click a button on their computer screen.

Intelligence GCHQ collects on British persons of interest is shared with domestic security agency MI5, which usually takes the lead on spying operations within the U.K. MI5 conducts its own extensive domestic surveillance as part of a program called DIGINT (digital intelligence).

GCHQ’s documents suggest that it typically retains metadata for periods of between 30 days to six months. It stores the content of communications for a shorter period of time, varying between three to 30 days. The retention periods can be extended if deemed necessary for “cyber defense.” One secret policy paper dated from January 2010 lists the wide range of information the agency classes as metadata — including location data that could be used to track your movements, your email, instant messenger, and social networking “buddy lists,” logs showing who you have communicated with by phone or email, the passwords you use to access “communications services” (such as an email account), and information about websites you have viewed.

Records showing the full website addresses you have visited — for instance, www.gchq.gov.uk/what_we_do — are treated as content. But the first part of an address you have visited — for instance, www.gchq.gov.uk — is treated as metadata. In isolation, a single metadata record of a phone call, email, or website visit may not reveal much about a person’s private life, according to Ethan Zuckerman, director of Massachusetts Institute of Technology’s Center for Civic Media. But if accumulated and analyzed over a period of weeks or months, these details would be “extremely personal,” he told The Intercept, because they could reveal a person’s movements, habits, religious beliefs, political views, relationships, and even sexual preferences. For Zuckerman, who has studied the social and political ramifications of surveillance, the most concerning aspect of large-scale government data collection is that it can be “corrosive towards democracy” — leading to a chilling effect on freedom of expression and communication. “Once we know there’s a reasonable chance that we are being watched in one fashion or another it’s hard for that not to have a ‘panopticon effect,’” he said, “where we think and behave differently based on the assumption that people may be watching and paying attention to what we are doing.”

When compared to surveillance rules in place in the U.S., GCHQ notes in one document that the U.K. has “a light oversight regime.” The more lax British spying regulations are reflected in secret internal rules that highlight greater restrictions on how NSA databases can be accessed. The NSA’s troves can be searched for data on British citizens, one document states, but they cannot be mined for information about Americans or other citizens from countries in the Five Eyes alliance. No such constraints are placed on GCHQ’s own databases, which can be sifted for records on the phone calls, emails, and Internet usage of Brits, Americans, and citizens from any other country. The scope of GCHQ’s surveillance powers explain in part why Snowden told The Guardian in June 2013 that U.K. surveillance is “worse than the U.S.” In an interview with Der Spiegel in July 2013, Snowden added that British Internet cables were “radioactive” and joked: “Even the Queen’s selfies to the pool boy get logged.”

In recent years, the biggest barrier to GCHQ’s mass collection of data does not appear to have come in the form of legal or policy restrictions. Rather, it is the increased use of encryption technology that protects the privacy of communications that has posed the biggest potential hindrance to the agency’s activities. “The spread of encryption … threatens our ability to do effective target discovery/development,” says a top-secret report co-authored by an official from the British agency and an NSA employee in 2011. “Pertinent metadata events will be locked within the encrypted channels and difficult, if not impossible, to prise out,” the report says, adding that the agencies were working on a plan that would “(hopefully) allow our Internet Exploitation strategy to prevail.”

That the New Zealand government engages in precisely the mass surveillance activities Key vehemently denied is now barely in dispute. Indeed, a former director of GCSB under Key, Sir Bruce Ferguson, while denying any abuse of New Zealander’s communications, now admits that the agency engages in mass surveillance.

Meanwhile, Russel Norman, the head of the country’s Green Party, said in response to these stories that New Zealand is “committing crimes” against its neighbors in the Pacific by subjecting them to mass surveillance, and insists that the Key government broke the law because that dragnet necessarily includes the communications of New Zealand citizens when they travel in the region.

So now that it’s proven that New Zealand does exactly that which Prime Minister Key vowed would cause him to resign if it were proven, is he preparing his resignation speech? No: that’s something a political official with a minimal amount of integrity would do. Instead — even as he now refuses to say what he has repeatedly said before: that GCSB does not engage in mass surveillance — he’s simply retracting his pledge as though it were a minor irritant, something to be casually tossed aside:

When asked late last week whether New Zealanders have a right to know what their government is doing in the realm of digital surveillance, the Prime Minister said: “as a general rule, no.” And he expressly refuses to say whether New Zealand is doing that which he swore repeatedly it was not doing, as this excellent interview from Radio New Zealand sets forth: Interviewer: “Nicky Hager’s revelations late last week . . . have stoked fears that New Zealanders’ communications are being indiscriminately caught in that net. . . . The Prime Minister, John Key, has in the past promised to resign if it were found to be mass surveillance of New Zealanders . . . Earlier, Mr. Key was unable to give me an assurance that mass collection of communications from New Zealanders in the Pacific was not taking place.” PM Key: “No, I can’t. I read the transcript [of former GCSB Director Bruce Ferguson’s interview] – I didn’t hear the interview – but I read the transcript, and you know, look, there’s a variety of interpretations – I’m not going to critique–”

Interviewer: “OK, I’m not asking for a critique. Let’s listen to what Bruce Ferguson did tell us on Friday:” Ferguson: “The whole method of surveillance these days, is sort of a mass collection situation – individualized: that is mission impossible.” Interviewer: “And he repeated that several times, using the analogy of a net which scoops up all the information. . . . I’m not asking for a critique with respect to him. Can you confirm whether he is right or wrong?” Key: “Uh, well I’m not going to go and critique the guy. And I’m not going to give a view of whether he’s right or wrong” . . . . Interviewer: “So is there mass collection of personal data of New Zealand citizens in the Pacific or not?” Key: “I’m just not going to comment on where we have particular targets, except to say that where we go and collect particular information, there is always a good reason for that.”

From “I will resign if it’s shown we engage in mass surveillance of New Zealanders” to “I won’t say if we’re doing it” and “I won’t quit either way despite my prior pledges.” Listen to the whole interview: both to see the type of adversarial questioning to which U.S. political leaders are so rarely subjected, but also to see just how obfuscating Key’s answers are. The history of reporting from the Snowden archive has been one of serial dishonesty from numerous governments: such as the way European officials at first pretended to be outraged victims of NSA only for it to be revealed that, in many ways, they are active collaborators in the very system they were denouncing. But, outside of the U.S. and U.K. itself, the Key government has easily been the most dishonest over the last 20 months: one of the most shocking stories I’ve seen during this time was how the Prime Minister simultaneously plotted in secret to exploit the 2013 proposed law to implement mass surveillance at exactly the same time that he persuaded the public to support it by explicitly insisting that it would not allow mass surveillance. But overtly reneging on a public pledge to resign is a new level of political scandal. Key was just re-elected for his third term, and like any political official who stays in power too long, he has the despot’s mentality that he’s beyond all ethical norms and constraints. But by the admission of his own former GCSB chief, he has now been caught red-handed doing exactly that which he swore to the public would cause him to resign if it were proven. If nothing else, the New Zealand media ought to treat that public deception from its highest political official with the level of seriousness it deserves.