Quotulatiousness

October 11, 2013

Creating an “air gap” for computer security

Filed under: Liberty, Technology — Tags: , , , , — Nicholas @ 12:13

Bruce Schneier explains why you’d want to do this … and how much of a pain it can be to set up and work with:

Since I started working with Snowden’s documents, I have been using a number of tools to try to stay secure from the NSA. The advice I shared included using Tor, preferring certain cryptography over others, and using public-domain encryption wherever possible.

I also recommended using an air gap, which physically isolates a computer or local network of computers from the Internet. (The name comes from the literal gap of air between the computer and the Internet; the word predates wireless networks.)

But this is more complicated than it sounds, and requires explanation.

Since we know that computers connected to the Internet are vulnerable to outside hacking, an air gap should protect against those attacks. There are a lot of systems that use — or should use — air gaps: classified military networks, nuclear power plant controls, medical equipment, avionics, and so on.

Osama Bin Laden used one. I hope human rights organizations in repressive countries are doing the same.

Air gaps might be conceptually simple, but they’re hard to maintain in practice. The truth is that nobody wants a computer that never receives files from the Internet and never sends files out into the Internet. What they want is a computer that’s not directly connected to the Internet, albeit with some secure way of moving files on and off.

He also provides a list of ten rules (or recommendations, I guess) you should follow if you want to set up an air-gapped machine of your own.

October 4, 2013

John Lanchester on the Guardian‘s GCHQ files

Filed under: Britain, Government, Liberty, Media — Tags: , , , , , — Nicholas @ 07:44

Novelist John Lanchester was invited to look at the trove of files the Guardian received from Edward Snowden:

In August, the editor of the Guardian rang me up and asked if I would spend a week in New York, reading the GCHQ files whose UK copy the Guardian was forced to destroy. His suggestion was that it might be worthwhile to look at the material not from a perspective of making news but from that of a novelist with an interest in the way we live now.

I took Alan Rusbridger up on his invitation, after an initial reluctance that was based on two main reasons. The first of them was that I don’t share the instinctive sense felt by many on the left that it is always wrong for states to have secrets. I’d put it more strongly than that: democratic states need spies.

And all’s well in the world and we’re worried over nothing?

My week spent reading things that were never meant to be read by outsiders was, from this point of view, largely reassuring. Most of what GCHQ does is exactly the kind of thing we all want it to do. It takes an interest in places such as the Horn of Africa, Iran, and North Korea; it takes an interest in energy security, nuclear proliferation, and in state-sponsored computer hacking.

There doesn’t seem to be much in the documents about serious crime, for which GCHQ has a surveillance mandate, but it seems that much of this activity is covered by warrants that belong to other branches of the security apparatus. Most of this surveillance is individually targeted: it concerns specific individuals and specific acts (or intentions to act), and as such, it is not the threat.

Few people are saying we don’t need intelligence-gathering organizations like GCHQ, but we do have a right to be concerned about what they are doing when they’re not watching actual, known threats. They have capabilities that we generally thought were just from the pages of James Bond novels or Tom Clancy thrillers … and they use them all the time, not just for keeping tabs on the “bad guys”.

In the case of modern signals intelligence, this is no longer true. Life has changed. It has changed because of the centrality of computers and digital activity to every aspect of modern living. Digital life is central to work: many of us, perhaps most of us, spend most of our working day using a computer. Digital life is central to our leisure: a huge portion of our discretionary activity has a digital component, even things which look like they are irreducibly un-digital, from cycling to cooking.

[…]

As for our relationships and family lives, that has, especially for younger people, become a digital-first activity. Take away Facebook and Twitter, instant messaging and Skype and YouTube, and then — it’s hard to imagine, but try — take away the mobile phone, and see the yawning gap where all human interaction used to take place. About the only time we don’t use computers is when we’re asleep — that’s unless we have a gadget that tracks our sleep, or monitors our house temperature, or our burglar alarm, or whatever.

This is the central point about what our spies and security services can now do. They can, for the first time, monitor everything about us, and they can do so with a few clicks of a mouse and — to placate the lawyers — a drop-down menu of justifications.

Looking at the GCHQ papers, it is clear that there is an ambition to get access to everything digital. That’s what engineers do: they seek new capabilities. When it applies to the people who wish us harm, that’s fair enough. Take a hypothetical, but maybe not unthinkable, ability to eavesdrop on any room via an electrical socket. From the GCHQ engineers’ point of view, they would do that if they could. And there are a few people out there on whom it would be useful to be able to eavesdrop via an electrical socket. But the price of doing so would be a society that really did have total surveillance. Would it be worth it? Is the risk worth the intrusion?

That example might sound far-fetched, but trust me, it isn’t quite as far fetched as all that, and the basic intention on the part of the GCHQ engineers — to get everything — is there.

October 2, 2013

Bruce Schneier’s TEDx talk “The Battle for Power on the Internet”

Filed under: Media, Technology — Tags: , , , , — Nicholas @ 08:56

Published on 25 Sep 2013

Bruce Schneier gives us a glimpse of the future of the internet, and shares some of the context we should keep in mind, and the insights we need to understand, as we prepare for it. Learn more about Bruce Schneier at https://www.schneier.com and TEDxCambridge at http://www.tedxcambridge.com.

About TEDx, x = independently organized event
In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)

October 1, 2013

PRSM – the not-at-all-a-joke NSA sharing network

Filed under: Government, Technology, USA — Tags: , , , , — Nicholas @ 12:59

Techdirt‘s Mike Masnick on the no-we’re-actually-serious “joke” PRSM network:

Soon after the very earliest reporting on Ed Snowden’s leaked documents about PRISM, the folks from Datacoup put together the very amusing GETPRSM website, which looks very much like the announcement of a new social network, but (the joke is) it’s really the NSA scooping up all our data and making the connections. It’s pretty funny. Except, of course, when you find out that it’s real. And, yes, that seems to be the latest revelation out of Ed Snowden’s leaks. The NY Times has an article by James Risen and Laura Poitras (what a combo reporting team there!) detailing how the NSA has basically built its own “shadow” social network in which it tries to create a “social graph” of pretty much everyone that everyone knows, foreign or American, and it all happens (of course) without a warrant. And, note, this is relatively new:

    The agency was authorized to conduct “large-scale graph analysis on very large sets of communications metadata without having to check foreignness” of every e-mail address, phone number or other identifier, the document said. Because of concerns about infringing on the privacy of American citizens, the computer analysis of such data had previously been permitted only for foreigners.

    The agency can augment the communications data with material from public, commercial and other sources, including bank codes, insurance information, Facebook profiles, passenger manifests, voter registration rolls and GPS location information, as well as property records and unspecified tax data, according to the documents. They do not indicate any restrictions on the use of such “enrichment” data, and several former senior Obama administration officials said the agency drew on it for both Americans and foreigners.

There were apparently two policy changes that allowed this to happen, and both occurred in the past three years. First, in November of 2010, the NSA was allowed to start looking at phone call and email logs of Americans to try to help figure out associations for “foreign intelligence purposes.” Note that phrase. We’ll come back to it. For years, the NSA had been barred from viewing any content on US persons, and the NSA, President Obama and others have continued to insist to this day that there are minimization procedures that prevent spying on Americans. Except, this latest revelation shows that, yet again, this isn’t actually true.

September 18, 2013

The NSA scandal is not about mere privacy

Filed under: Government, Liberty, USA — Tags: , , , , — Nicholas @ 08:19

Last week, Yochai Benkler posted this in the Guardian:

The spate of new NSA disclosures substantially raises the stakes of this debate. We now know that the intelligence establishment systematically undermines oversight by lying to both Congress and the courts. We know that the NSA infiltrates internet standard-setting processes to security protocols that make surveillance harder. We know that the NSA uses persuasion, subterfuge, and legal coercion to distort software and hardware product design by commercial companies.

We have learned that in pursuit of its bureaucratic mission to obtain signals intelligence in a pervasively networked world, the NSA has mounted a systematic campaign against the foundations of American power: constitutional checks and balances, technological leadership, and market entrepreneurship. The NSA scandal is no longer about privacy, or a particular violation of constitutional or legislative obligations. The American body politic is suffering a severe case of auto-immune disease: our defense system is attacking other critical systems of our body.

First, the lying. The National Intelligence University, based in Washington, DC, offers a certificate program called the denial and deception advanced studies program. That’s not a farcical sci-fi dystopia; it’s a real program about countering denial and deception by other countries. The repeated misrepresentations suggest that the intelligence establishment has come to see its civilian bosses as adversaries to be managed through denial and deception.

[…]

Second, the subversion. Last week, we learned that the NSA’s strategy to enhance its surveillance capabilities was to weaken internet security in general. The NSA infiltrated the social-professional standard-setting organizations on which the whole internet relies, from National Institute of Standards and Technology to the Internet Engineering Task Force itself, the very institutional foundation of the internet, to weaken the security standards. Moreover, the NSA combined persuasion and legal coercion to compromise the commercial systems and standards that offer the most basic security systems on which the entire internet runs. The NSA undermined the security of the SSL standard critical to online banking and shopping, VPN products central to secure corporate, research, and healthcare provider networks, and basic email utilities.

Serious people with grave expressions will argue that if we do not ruthlessly expand our intelligence capabilities, we will suffer terrorism and defeat. Whatever minor tweaks may be necessary, the argument goes, the core of the operation is absolutely necessary and people will die if we falter. But the question remains: how much of what we have is really necessary and effective, and how much is bureaucratic bloat resulting in the all-too-familiar dynamics of organizational self-aggrandizement and expansionism?

The “serious people” are appealing to our faith that national security is critical, in order to demand that we accept the particular organization of the Intelligence Church. Demand for blind faith adherence is unacceptable.

September 15, 2013

Bruce Schneier on what you can do to stay out of the NSA’s view

Filed under: Liberty, Technology — Tags: , , , , , — Nicholas @ 10:44

Other than going completely off the grid, you don’t have the ability to stay completely hidden, but there are some things you can do to decrease your visibility to the NSA:

With all this in mind, I have five pieces of advice:

  1. Hide in the network. Implement hidden services. Use Tor to anonymize yourself. Yes, the NSA targets Tor users, but it’s work for them. The less obvious you are, the safer you are.
  2. Encrypt your communications. Use TLS. Use IPsec. Again, while it’s true that the NSA targets encrypted connections — and it may have explicit exploits against these protocols — you’re much better protected than if you communicate in the clear.
  3. Assume that while your computer can be compromised, it would take work and risk on the part of the NSA — so it probably isn’t. If you have something really important, use an air gap. Since I started working with the Snowden documents, I bought a new computer that has never been connected to the Internet. If I want to transfer a file, I encrypt the file on the secure computer and walk it over to my Internet computer, using a USB stick. To decrypt something, I reverse the process. This might not be bulletproof, but it’s pretty good.
  4. Be suspicious of commercial encryption software, especially from large vendors. My guess is that most encryption products from large US companies have NSA-friendly back doors, and many foreign ones probably do as well. It’s prudent to assume that foreign products also have foreign-installed backdoors. Closed-source software is easier for the NSA to backdoor than open-source software. Systems relying on master secrets are vulnerable to the NSA, through either legal or more clandestine means.
  5. Try to use public-domain encryption that has to be compatible with other implementations. For example, it’s harder for the NSA to backdoor TLS than BitLocker, because any vendor’s TLS has to be compatible with every other vendor’s TLS, while BitLocker only has to be compatible with itself, giving the NSA a lot more freedom to make changes. And because BitLocker is proprietary, it’s far less likely those changes will be discovered. Prefer symmetric cryptography over public-key cryptography. Prefer conventional discrete-log-based systems over elliptic-curve systems; the latter have constants that the NSA influences when they can.

Since I started working with Snowden’s documents, I have been using GPG, Silent Circle, Tails, OTR, TrueCrypt, BleachBit, and a few other things I’m not going to write about. There’s an undocumented encryption feature in my Password Safe program from the command line; I’ve been using that as well.

I understand that most of this is impossible for the typical Internet user. Even I don’t use all these tools for most everything I am working on. And I’m still primarily on Windows, unfortunately. Linux would be safer.

The NSA has turned the fabric of the Internet into a vast surveillance platform, but they are not magical. They’re limited by the same economic realities as the rest of us, and our best defense is to make surveillance of us as expensive as possible.

Trust the math. Encryption is your friend. Use it well, and do your best to ensure that nothing can compromise it. That’s how you can remain secure even in the face of the NSA.

September 7, 2013

Maybe the conspiracy theorists just aren’t paranoid enough

Filed under: Government, Media, Technology, USA — Tags: , , , , — Nicholas @ 09:49

Bruce Schneier on the destruction of public trust in government agencies:

I’ve recently seen two articles speculating on the NSA’s capability, and practice, of spying on members of Congress and other elected officials. The evidence is all circumstantial and smacks of conspiracy thinking — and I have no idea whether any of it is true or not — but it’s a good illustration of what happens when trust in a public institution fails.

The NSA has repeatedly lied about the extent of its spying program. James R. Clapper, the director of national intelligence, has lied about it to Congress. Top-secret documents provided by Edward Snowden, and reported on by the Guardian and other newspapers, repeatedly show that the NSA’s surveillance systems are monitoring the communications of American citizens. The DEA has used this information to apprehend drug smugglers, then lied about it in court. The IRS has used this information to find tax cheats, then lied about it. It’s even been used to arrest a copyright violator. It seems that every time there is an allegation against the NSA, no matter how outlandish, it turns out to be true.

Guardian reporter Glenn Greenwald has been playing this well, dribbling the information out one scandal at a time. It’s looking more and more as if the NSA doesn’t know what Snowden took. It’s hard for someone to lie convincingly if he doesn’t know what the opposition actually knows.

All of this denying and lying results in us not trusting anything the NSA says, anything the president says about the NSA, or anything companies say about their involvement with the NSA. We know secrecy corrupts, and we see that corruption. There’s simply no credibility, and — the real problem — no way for us to verify anything these people might say.

August 18, 2013

Rounding up the “government is spying on everyone” news

Filed under: Government, Liberty, Technology — Tags: , , , , — Nicholas @ 10:48

A linkapalooza of information at Zero Hedge:

That’s just the first few items of a long list. Read the whole thing.

August 12, 2013

Online privacy and habitual oversharing

Filed under: Liberty, Media, Technology — Tags: , , , , — Nicholas @ 09:47

Cory Doctorow explains why so many of us have gotten into the habit of oversharing personal details in our social media activities:

Whenever government surveillance is debated, someone inevitably points out that it is no cause for alarm, since people already overshare sensitive personal information on Facebook. This means there’s hardly anything to be gleaned from state surveillance that isn’t already there for the taking on social media.

It’s true people overshare on social networks, providing information in ways that they later come to regret. The consequences of oversharing range widely, from losing a job to being outed for your sexual orientation. If you live in a dictatorship, intercepted social media sessions can be used by those in charge to compile enemies lists, determining whom to arrest, whom to torture, and – potentially – whom to murder.

The key reason for oversharing is that cause and effect are separated by volumes of time and space, so understanding the consequences can be difficult. Imagine practising penalty kicks by kicking the ball and then turning around before it lands; two years later, someone visits you and tells you where your kicks ended up. This is the kind of feedback loop we contend with when it comes to our privacy disclosures.

In other words, you may make a million small and large disclosures on different services, with different limits on your sharing preferences, and many years later, you lose your job. Or your marriage. Or maybe your life, if you’re unlucky enough to have your Facebook scraped by a despot who has you in his dominion.

August 11, 2013

Speculations on why Lavabit went dark

Filed under: Business, Law, Liberty, USA — Tags: , , , — Nicholas @ 11:40

In The New Yorker, Michael Phillips tries to outline the legal picture around the Lavabit shutdown:

In mid-July, Tanya Lokshina, the deputy director for Human Rights Watch’s Moscow office, wrote on her Facebook wall that she had received an e-mail from edsnowden@lavabit.com. It requested that she attend a press conference at Moscow’s Sheremetyevo International Airport to discuss the N.S.A. leaker’s “situation.” This was the wider public’s introduction to Lavabit, an e-mail service prized for its security. Lavabit promised, for instance, that messages stored on the service using asymmetric encryption, which encrypts incoming e-mails before they’re saved on Lavabit’s servers, could not even be read by Lavabit itself.

Yesterday, Lavabit went dark. In a cryptic statement posted on the Web site, the service’s owner and operator, Ladar Levison, wrote, “I cannot share my experiences over the last six weeks, even though I have twice made the appropriate requests.” Those experiences led him to shut down the service rather than, as he put it, “become complicit in crimes against the American people.” Lavabit users reacted with consumer vitriol on the company’s Facebook page (“What about our emails?”), but the tide quickly turned toward government critique. By the end of the night, a similar service, Silent Circle, also shut down its encrypted e-mail product, calling the Lavabit affair the “writing [on] the wall.”

Which secret surveillance scheme is involved in the Lavabit case? The company may have received a national-security letter, which is a demand issued by a federal agency (typically the F.B.I.) that the recipient turn over data about other individuals. These letters often forbid recipients from discussing it with anyone. Another possibility is that the Foreign Intelligence Surveillance Court may have issued a warrant ordering Lavabit to participate in ongoing e-mail surveillance. We can’t be completely sure: as Judge Reggie Walton, the presiding judge of the FISA court, explained to Senator Patrick Leahy in a letter dated July 29th, FISA proceedings, decisions, and legal rationales are typically secret. America’s surveillance programs are secret, as are the court proceedings that enable them and the legal rationales that justify them; informed dissents, like those by Levison or Senator Ron Wyden, must be kept secret. The reasons for all this secrecy are also secret. That some of the secrets are out has not deterred the Obama Administration from prosecuting leakers under the Espionage Act for disclosure of classified information. Call it meta-secrecy.

August 9, 2013

Locking the (electronic) barn door

Filed under: Law, Media, Technology — Tags: , , , — Nicholas @ 08:03

The encrypted email service that was reportedly used by Edward Snowden just announced that it will be shutting down:

Today, Lavabit announced that it would shut down its encrypted email service rather than “become complicit in crimes against the American people.” Lavabit did not say what it had been asked to do, only that it was legally prohibited from sharing the events leading to its decision.

Lavabit was an email provider, apparently used by Edward Snowden along with other privacy sensitive users, with an avowed mission to offer an “e-mail service that never sacrifices privacy for profits” and promised to “only release private information if legally compelled by the courts in accordance with the United States Constitution.” It backed up this claim by encrypting all emails on Lavabit servers such that Lavabit did not have the ability to access a user’s email (Lavabit’s white paper), at least without that user’s passphrase, which the email provider did not store.

Given the impressive powers of the government to obtain emails and records from service providers, both with and without legal authority, it is encouraging to see service providers take steps to limit their ability to access user data, as Lavabit had done.

[…]

Lavabit’s post indicates that there was a gag order, and that there is an ongoing appeal before the Fourth Circuit. We call on the government and the courts to unseal enough of the docket to allow, at a minimum, the public to know the legal authority asserted, both for the gag and the substance, and give Lavabit the breathing room to participate in the vibrant and critical public debates on the extent of email privacy in an age of warrantless bulk surveillance by the NSA.

August 7, 2013

Bruce Schneier – “it’s becoming clear that we can’t trust anything anyone official says about these programs”

Filed under: Government, Media, USA — Tags: , , , , , , — Nicholas @ 08:39

Bruce Schneier talks about the need to restore trust in government and the internet after all the proof we’ve had lately that “they” are lying to us pretty much all the time:

In July 2012, responding to allegations that the video-chat service Skype — owned by Microsoft — was changing its protocols to make it possible for the government to eavesdrop on users, Corporate Vice President Mark Gillett took to the company’s blog to deny it.

Turns out that wasn’t quite true.

Or at least he — or the company’s lawyers — carefully crafted a statement that could be defended as true while completely deceiving the reader. You see, Skype wasn’t changing its protocols to make it possible for the government to eavesdrop on users, because the government was already able to eavesdrop on users.

At a Senate hearing in March, Director of National Intelligence James Clapper assured the committee that his agency didn’t collect data on hundreds of millions of Americans. He was lying, too. He later defended his lie by inventing a new definition of the word “collect,” an excuse that didn’t even pass the laugh test.

As Edward Snowden’s documents reveal more about the NSA’s activities, it’s becoming clear that we can’t trust anything anyone official says about these programs.

Google and Facebook insist that the NSA has no “direct access” to their servers. Of course not; the smart way for the NSA to get all the data is through sniffers.

Apple says it’s never heard of PRISM. Of course not; that’s the internal name of the NSA database. Companies are publishing reports purporting to show how few requests for customer-data access they’ve received, a meaningless number when a single Verizon request can cover all of their customers. The Guardian reported that Microsoft secretly worked with the NSA to subvert the security of Outlook, something it carefully denies. Even President Obama’s justifications and denials are phrased with the intent that the listener will take his words very literally and not wonder what they really mean.

[…]

Ronald Reagan once said “trust but verify.” That works only if we can verify. In a world where everyone lies to us all the time, we have no choice but to trust blindly, and we have no reason to believe that anyone is worthy of blind trust. It’s no wonder that most people are ignoring the story; it’s just too much cognitive dissonance to try to cope with it.

This sort of thing can destroy our country. Trust is essential in our society. And if we can’t trust either our government or the corporations that have intimate access into so much of our lives, society suffers. Study after study demonstrates the value of living in a high-trust society and the costs of living in a low-trust one.

August 6, 2013

The Electronic Frontier Foundation on reforming the NSA

Filed under: Government, Law, Liberty, USA — Tags: , , , , — Nicholas @ 11:36

The EFF has a few suggestions on how to go about reining-in the NSA:

While we still believe that the best first step is a modern Church Committee, an independent, public investigation and accounting of the government’s surveillance programs that affect Americans, members of Congress seem determined to try to enact fixes now. Almost a dozen bills have already been introduced or will be introduced in the coming weeks.

While we’re also waiting to see what the various bills will look like before endorsing anything, here’s — in broad strokes — what we’d like to see, and what should be avoided or opposed as a false response. We know full well that the devil is in the details when it comes to legislation, so these are not set in stone and they aren’t exhaustive. But as the debate continues in Congress, here are some key guideposts.

This first post focuses on surveillance law reform. In later posts we’ll discuss transparency, secret law and the FISA Court as well as other topics raised by the ongoing disclosures. In short, there’s much Congress can and should do here, but we also need to be on the lookout for phony measures dressed as reform that either don’t fix things or take us backwards.

August 4, 2013

New tools for the surveillance state

Filed under: Government, Liberty, USA — Tags: , , , , — Nicholas @ 11:01

James Miller on token attempts to roll back the security state by local governments and other groups:

New surveillance technology lowers the barrier of effort needed to soak the productive class of the surplus fruits of its labor. From monitoring backyards to ensure taxes are being paid on swimming pools to spying on farmers who violate agricultural regulations, states across the globe are already using new spy tools to extort more loot from the greater public.

All the while, the political class gives an assurance that the technological innovation will not be abused. Newspaper editors parrot the message and paint any critic as a tinfoil hat loon who thinks Big Brother sleeps under their bed. And then there are the television intellectuals who take great joy in making flippant remarks about conspiracy theorists. Each of these personalities pictures him or herself as sitting a few ladder rungs above the horde of bumbling mass-men.

One has to be either lying or painfully ignorant to believe government will not abuse surveillance drones. State officials have rarely failed to use their capacity to terrify the populace. Just recently, journalist Glenn Greenwald and the Guardian revealed that the National Security Agency sweeps up the internet activity of all U.S. residents absent any warrants. Prior to the leak, those politicians in charge of overseeing the government’s oversight activities claimed the snooping was done in the public good and not as widespread as suspected. The new details of the program contradict the assurance, as the NSA’s spy activity is more intrusive – and prone to abuse – than originally thought.

A sterling record of misconduct is still not enough to convince enlightened thinkers and academics of the state’s propensity to terrorize. There are still a handful of civil liberty organizations calling attention to the dangers of the widespread use of surveillance drones and data gathering. But their beef is focused more on the right to privacy rather than a usurpation of basic property rights.

August 1, 2013

“That kind of grassroots power tends to make government officials jittery”

Filed under: Law, Media, USA — Tags: , , — Nicholas @ 12:34

J.D. Tuccille looks at the rise of Twitter … not so much its rise in users, but the rise in government interest and interference:

Twitter information requests 2012-13You know you’ve arrived as an online media operation when governments take an interest in who is speaking out, and make efforts to muzzle what’s published. That’s definitely the case with Twitter, the microblogging platform that started as an outlet for exhibitionist ADHD sufferers, only to become a powerful medium for sharing news and grassroots organizing. According to the company’s latest transparency report, governments around the world are issuing ever-more demands for information about the service’s users, and stepping up efforts to suppress tweeted content.

From January 1 through June 30 of this year, Twitter received 1,157 government requests for private information about users and accounts, up from 849 during the same period in 2012. Of those, authorities in the United States were responsible for 902 requests. Twitter complied in whole or part with 55 percent of all requests — 67 percent of those originating in the U.S.

Interestingly, roughly 20 percent of information requests issued by American authorities were “under seal,” meaning that Twitter was forbidden to fulfill its usual policy of informing users about requests for their private information.

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