Ed Felten's blog

CITP Announces 2009-10 Visitors

Today, I'm pleased to announce CITP's visitors for the upcoming academic year.

Deven R. Desai, Visiting Fellow: Deven is an Associate Professor of Law at the Thomas Jefferson School of Law, and a permanent blogger at Concurring Opinions. Professor Desai’s scholarship centers on intellectual property, information theory, and Internet-related law. He plans to work on a major project exploring the ways trademark law can foster, or limit, online innovation.

James Katz, Visiting Fellow. Jim is Professor, Chair of the Department of Communication, and Director of the Center for Mobile Communication Studies at Rutgers, where he holds the University's highest professorial rank. He has devoted much of his career to exploring the social consequences of new communication technology, especially the mobile phone and Internet. Currently he is looking at how personal communication technologies can be used by teens from urban environments to engage in informal science and health learning. This research is being carried out through an NSF-sponsored project with New Jersey’s Liberty Science Center.

Rebecca MacKinnon, Visiting Fellow (spring term): Rebecca is an Assistant Professor at the University of Hong Kong's Journalism and Media Studies Centre. She is currently on leave, as an Open Society Fellow, to work on a book tentatively titled "Internet Freedom and Control: Lessons from China for the World." She will spend the spring 2010 semester at CITP, continuing to work on the book. Rebecca is a cofounder of Global Voices, a founding member of the Global Network Initiative, and a former television journalist, having served as CNN's bureau chief in Beijing and, later, Tokyo.

Jens Grossklags, Postdoctoral Research Associate: Jens, a new PhD from the UC Berkeley School of Information, studies information economics and technology policy. He focuses on the intersection of privacy, security, and network systems. His approach is highly interdisciplinary, combining economics, computer science, and public policy. Currently, he is investigating the ways institutions and end users make decisions about complex computer security risks under conditions of uncertainty and limited information.

Joseph Lorenzo Hall, Visiting Postdoctoral Research Associate: Joe, whose work is supported by the NSF ACCURATE Center, also earned his PhD from the UC Berkeley School of Information. His dissertation examined public policy mechanisms for making computerized voting systems more transparent. He continues to work along the same lines, drawing lessons from voting machines, gaming machines and other technologies on how to best protect users from error and malicious activity.

In addition to these full time appointments, the Center will also welcome two Visiting Research Collaborators on an occasional basis: Alex Halderman, an Assistant Professor of Computer Science at the University of Michigan (and recently in the news for his research group's analysis of China's Green Dam software), and David Lukens, an attorney who has been collaborating on the Center's transparency work.

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U.S. Objects to China's Mandatory Green Dam Censorware

Yesterday, the U.S. Commerce Secretary and Trade Representative sent a letter to China's government, objecting to China's order, effective July 1, to require that all new PCs sold in China have preinstalled the Green Dam Youth Escort censorware program.

Here's today's New York Times:

Chinese officials have said that the filtering software, known as Green Dam-Youth Escort, is meant to block pornography and other “unhealthy information.”

In part, the American officials’ complaint framed this as a trade issue, objecting to the burden put on computer makers to install the software with little notice. But it also raised broader questions about whether the software would lead to more censorship of the Internet in China and restrict freedom of expression.

The Green Dam requirement puts U.S.-based PC companies, such as HP and Dell, in a tough spot: if they don't comply they won't be able to sell PCs in China; but if they do comply they will be censoring their customers' Internet use and exposing customers to serious security risks.

There are at least two interesting new angles here. The first is the U.S. claim that China's action violates free trade agreements. The U.S. has generally refrained from treating China's Internet censorship as a trade issue, even though U.S. companies have often found themselves censored at times when competing Chinese companies were not. This unequal treatment, coupled with the Chinese government's reported failure to define clearly which actions trigger censorship, looks like a trade barrier -- but the U.S. hasn't said much about it up to now.

The other interesting angle is the direct U.S. objection to censorship of political speech. For some time, the U.S. has tolerated China's government blocking certain political speech in the network, via the "Great Firewall". It's not clear exactly how this objection is framed -- the U.S. letter is not public -- but news reports imply that political censorship itself, or possibly the requirement that U.S. companies participate in it, is a kind of improper trade barrier.

We're heading toward an interesting showdown as the July 1 date approaches. Will U.S. companies ship machines with Green Dam? According to the New York Times, HP hasn't decided, and Dell is dodging the question. The companies don't want to lose access to the China market -- but if U.S. companies participate so directly in political censorship, they would be setting a very bad precedent.

My Testimony on Behavioral Advertising: Post-Mortem

On Thursday I testified at a House hearing about online behavioral advertising. (I also submitted written testimony.)

The hearing started at 10:00am, gaveled to order by Congressman Rush, chair of the Subcommittee on Commerce, Trade, and Consumer Protection. He was flanked by Congressman Boucher, chair of the Subcommittee on Communications, Technology, and the Internet , and Congressmen Steans and Radanovich, the Ranking Members (i.e., the highest-ranking Republican members) of the subcommittees.

First on the agenda we had opening statements by members of the committees. Members had either two or five minutes to speak, and the differing perspectives of the members became clear during these statements. The most colorful statement was by Congressman Barton, who supplemented his interesting on-topic statement with a brief digression about the Democrats vs. Republicans charity baseball game which was held the previous day. The Democrats won, to Congressman Barton's chagrin.

After the opening statements, the chair recessed the hearings, so the Members could go to the House floor to vote. Members of the House must be physically present in the House chamber in order to vote, so it's not unusual for hearings to recess when there is a floor vote. The House office buildings have buzzers, not unlike the bells that mark the ends of periods in a school, which alert everybody when a vote starts. The Members left the hearing room, and we all waited for the vote(s) to end, so our hearing could resume. The time was 10:45 AM.

What happened next was very unusual indeed. The House held vote after vote, more than fifty votes in total, as the day stretched on, hour after hour. They voted on amendments, on motions to reconsider the votes on the amendments, on other motions -- at one point, as far as I could tell, they were voting on a motion to reconsider a decision to table an appeal of a procedural decision of the chair. To put it bluntly, the Republicans were staging a kind of work stoppage. They did this, I hear, to protest an unusual procedural limitation that the Democrats had placed on the handling of the appropriations bill that was currently before the House. I don't know enough about the norms of House procedure to say which party had the better argument here -- but I do know that the recess in our hearing lasted eight and a half hours.

These were not the most exciting eight and a half hours I have experienced. As the day stretched on, we did get a chance to wander around and do a little light tourism. Probably the highlight was when we saw Angelina Jolie in the hallway.

When we reconvened at 7:15 PM, the room, which had been overflowing with spectators in the morning, was mostly empty. The members of the committees, though, made a pretty good showing, which was especially impressive given that it was Thursday evening, when many Members hightail it back home to their districts. Late in the day, after a day that must have been frustrating for everybody, we sat down to business and had a good, substantive hearing. There were no major surprises -- there rarely are at hearings -- but everyone got a chance to express their views, and the members asked substantive questions.

Thinking back on the hearing, I did realize one thing that may have been missing. The panel of witnesses included three companies, Yahoo, Google, and Facebook, that are both ad services and content providers. There was less attention to situations where the ad service and the content provider are separate companies. In this latter case, where the ad service does not have a direct relationship with the consumer, so the market pressure on the ad service to behave well is attenuated. (There is still some pressure, through the content provider, who wants to stay in the good graces of consumers, but an indirect link is not as effective as a direct one would be.) Yahoo, Google, and Facebook are household names, and we would naturally expect them to pay more careful attention to the desires of consumers and Congress than lower-profile ad services would.

Witnesses have the opportunity to submit further written testimony. Any suggestions on what I might discuss?

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My Testimony on Behavioral Advertising

I'm testifying this morning at 10:00 AM (Eastern) at a Congressional hearing on "Behavioral Advertising: Industry Practices and Consumers' Expectations". It's a joint hearing of two subcommittees of the House Committee on Energy and Commerce: the Subcommittee on Commerce, Trade, and Consumer Protection; and the Subcommittee on Communications, Technology, and the Internet .

Witnesses at the hearing are:

  • Jeffrey Chester, Executive Director, Center for Digital Democracy
  • Scott Cleland, President, Precursor LLC
  • Charles D. Curran, Executive Director, Network Advertising Initiative
  • Edward W. Felten, Professor of Computer Science and Public Affairs, Princeton University
  • Christopher M. Kelly, Chief Privacy Officer, Facebook
  • Anne Toth, Vice President of Policy, Head of Privacy, Yahoo! Inc.
  • Nicole Wong, Deputy General Counsel, Google Inc.

I submitted written testimony to the committee.

Look for a live webcast on the committee's site.

CITP Seeking New Associate Director

In the next few days, I'll be writing a post to announce CITP's visiting fellows for the upcoming 2009-2010 academic year. But first, today, I want to let you know about a change in the Center's leadership structure. After serving for two years as CITP's first-ever Associate Director, David Robinson will be leaving us in August to begin law school at Yale. As a result, we are now launching a search for a new Associate Director.

As Associate Director, he helped oversee CITP's growth into a larger, more mature organization, our move into a great new space in Sherrerd Hall, and two years of our busy activities calendar. He has been an integral part of the Center's management and its research activities. David has done a fantastic job, and we'll miss him, but we understand and support his decision to go on to law school as the next stage of his sure-to-be-stellar career. David will remain engaged with the Center's research, and we expect to cross paths with him often in the future.

The new Associate Director will pick up where David leaves off, taking our Center to the next level in its development. The job is a fabulous opportunity to exercise leadership, vision and dedication: As a startup, we are improvising and learning while we grow, constantly looking for new and better ways to advance the policy debate and public understanding of digital technologies through both technical and policy research. Our first challenge was to get things started---now that we are established, a key priority for the new Associate Director will be building richer and deeper links and collaborations with other faculty members, policymakers, and the tech policy community generally. Here's the official job description, soon to appear on the University's "Jobs at Princeton" web site:

The Associate Director serves as a core organizer and evangelist for the Center, both on campus and beyond. Working with the existing Center staff, the Associate Director will develop, plan and execute the Center’s public activities, including lecture series, workshops and policy briefings; recruit visiting researchers and policy experts and coordinate the selection appointment process; cultivate research collaborations, joint public events and other activities to build faculty engagement in the Center; coordinate interdisciplinary grant writing as appropriate; and develop and maintain the Center’s website and other published materials.

One of David's last projects at the Center will be to coordinate the search process for his replacement. The search will continue until the position is filled: We hope to have the new Associate Director in place by the start of the school year. Applicants should provide a cover letter, CV, and contact information for three references. These materials can be sent to David (or equivalently, once the University's jobs site has the listing, they can also be submitted through that route). David will also be happy to answer any questions about the position.

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China's New Mandatory Censorware Creates Big Security Flaws

Today Scott Wolchok, Randy Yao, and Alex Halderman at the University of Michigan released a report analyzing Green Dam, the censorware program that the Chinese government just ordered installed on all new computers in China. The researchers found that Green Dam creates very serious security vulnerabilities on users' computers.

The report starts with a summary of its findings:

The Chinese government has mandated that all PCs sold in the country must soon include a censorship program called Green Dam. This software monitors web sites visited and other activity on the computer and blocks adult content as well as politically sensitive material. We examined the Green Dam software and found that it contains serious security vulnerabilities due to programming errors. Once Green Dam is installed, any web site the user visits can exploit these problems to take control of the computer. This could allow malicious sites to steal private data, send spam, or enlist the computer in a botnet. In addition, we found vulnerabilities in the way Green Dam processes blacklist updates that could allow the software makers or others to install malicious code during the update process. We found these problems with less than 12 hours of testing, and we believe they may be only the tip of the iceberg. Green Dam makes frequent use of unsafe and outdated programming practices that likely introduce numerous other vulnerabilities. Correcting these problems will require extensive changes to the software and careful retesting. In the meantime, we recommend that users protect themselves by uninstalling Green Dam immediately.

The researchers have released a demonstration attack which will crash the browser of any Green Dam user. Another attack, for which they have not released a demonstration, allows any web page to seize control of any Green Dam user's computer.

This is a serious blow to the Chinese government's mandatory censorware plan. Green Dam's insecurity is a show-stopper -- no responsible PC maker will want to preinstall such dangerous software. The software can be fixed, but it will take a while to test the fix, and there is no guarantee that the next version won't have other flaws, especially in light of the blatant errors in the current version.

Internet Voting: How Far Can We Go Safely?

Yesterday I chaired an interesting panel on Internet Voting at CFP. Participants included Amy Bjelland and Craig Stender (State of Arizona), Susan Dzieduszycka-Suinat (Overseas Vote Foundation) Avi Rubin (Johns Hopkins), and Alec Yasinsac (Univ. of South Alabama). Thanks to David Bruggeman and Cameron Wilson at USACM for setting up the panel.

Nobody advocated a full-on web voting system that would allow voting from any web browser. Instead, the emphasis was on more modest steps, aimed specifically at overseas voters. Overseas voters are a good target population, because there aren't too many of them -- making experimentation less risky -- and because vote-by-mail serves them poorly.

Discussion focused on two types of systems: voting kiosks, and Internet transmission of absentee ballots.

A voting kiosk is a computer-based system, running carefully configured software, that is set up in a securable location overseas. Voters come to this location, authenticate themselves, and vote just as they would in a polling place back home. A good kiosk system keeps an electronic record, which is transmitted securely across the Internet to voting officials in the voter's home jurisdiction. It also keeps a paper record, verifiable by the voter, which is sent back to voting officials after the elections, enabling a post-election audit. A kiosk can use optical-scan technology or it can be a touch-screen machine with a paper trail -- essentially it's a standard voting system with a paper trail, connected to home across the Internet. If the engineering is done right, if the home system that receives the electronic ballots is walled off from the central vote-tabulating system, and if appropriate post-election auditing is done, this system can be secure enough to use. All of the panelists agreed that this type of system is worth trying, at least as a pilot test.

The other approach is use ordinary absentee ballots, but to distribute them and allow voters to return them online. A voter goes to a web site and downloads a file containing an absentee ballot and a cover sheet. After printing out the file, the voter fills out the cover sheet (giving his name and other information) and the ballot. He scans the cover sheet and ballot, and uploads the scan to a web site. Election officials collect and print the resulting file, and treat the printout like an ordinary absentee ballot.

Kevin Poulsen and Eric Rescorla criticize the security of this system, and for good reason. Internet distribution of blank ballots can be secure enough, if done very carefully, but returning filled-out ballots from an ordinary computer and browser is risky. Eric summarizes the risks:

We have integrity issues here as well: as Poulsen suggests (and quotes Rubin as suggesting), there are a number of ways for things to go wrong here: an attacker could subvert your computer and have it modify the ballots before sending them; you could get phished and the phisher could modify your ballot appropriately before passing it on to the central site. Finally, the attacker could subvert the central server and modify the ballots before they are printed out.

Despite the risks, systems of this sort are moving forward in various places. Arizona has one, which Amy and Craig demonstrated for the panel's audience, and the Overseas Vote Foundation has one as well.

Why is this less-secure alternative getting more traction than kiosk-based systems? Partly it's due to the convenience of being able to vote from anywhere (with a Net connection) instead of having to visit a kiosk location. That's understandable. But another part of the reason seems to be that people don't realize what can go wrong, and how often things actually do go wrong, in online interactions.

In the end, there was a lot of agreement among the panelists -- a rare occurrence in public e-voting discussions -- but disagreement remained about how far we can go safely. For overseas voters at least, the gap between what is convenient and what can be made safe is smaller than it is elsewhere, but that gap does still exist.

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iPhone Apps: Apple Picks a Little, Talks a Little

Last week Apple, in an incident destined for the textbooks, rejected an iPhone app called Eucalyptus, which lets you download and read classic public-domain books from Project Gutenberg. The rejection meant that nobody could download or use the app (without jailbreaking their phone). Apple's rationale? Some of the books, in Apple's view, were inappropriate.

Apple's behavior put me in mind of the Pick-a-Little Ladies from the classic musical The Music Man. These women, named for their signature song "Pick a Little, Talk a Little," condemn Marian the Librarian for having inappropriate books in her library:

Maud: Professor, her kind of woman doesn't belong on any committee. Of course, I shouldn't tell you this but she advocates dirty books.

Harold: Dirty books?!

Alma: Chaucer!

Ethel: Rabelais!

Eulalie: Balzac!

This is pretty much the scene we saw last week, with the Eucalyptus app in the role of Marian -- providing works by Chaucer, Rabelais, and Balzac -- and Apple in the role of the Pick-a-Little Ladies. Visualize Steve Jobs, in his black turtleneck and jeans, transported back to 1912 Iowa and singing along with these frumpy busybodies.

Later in The Music Man, the Pick-a-Little Ladies decide that Marian is all right after all, and they praise her for offering great literature. ("The Professor told us to read those books, and we simply adored them all!") In the same way, Apple, after the outcry over its muzzling of Eucalyptus, reverse course and un-rejected Eucalyptus. Now we can all get Chaucer! Rabelais! Balzac! on our iPhones.

But there is one important difference between Apple and the Pick-a-Little Ladies. Apple had the power to veto Eucalyptus, but the Ladies couldn't stop Marian from offering dirty books. The Ladies were powerless because Old Man Mason had cleverly bequeathed the library building to the town but the books to Marian. In today's terms, Mason had jailbroken the library.

All of this highlights the downside of Apple's controlling strategy. It's one thing to block apps that are fraudulent or malicious, but Apple has gone beyond this to set itself up as the arbiter of good taste in iPhone apps. If you were Apple, would you rather be the Pick-a-Little Ladies, pretending to sit in judgement over the town, or Old Man Mason, letting people make their own choices?

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European Antitrust Fines Against Intel: Possibly Justified

Last week the European Commission competition authorities charged Intel with anticompetitive behavior in the market for microprocessor chips, and levied a €1.06 billion ($1.45 billion) fine on the company. Some commentators attacked the ruling as ridiculous on its face. I disagree. Let me explain why the European action, though not conclusively justified at this point, is at least plausible.

The starting point of any competition analysis is to recall the purpose of competition law: not to protect rival firms (such as AMD in this case), but to protect competition for the benefit of consumers. The key is to understand what is fair competition and what is not. If a firm dominates a market, and even drives other firms out, but does so by producing better products at better prices, they deserve applause. If a dominant firm takes steps that are aimed more at undermining competition than at serving customers, then they may be crossing the line into anticompetitive behavior.

To do even a superficial analysis in a single blog post, we're going to have to make some assumptions. First, for the sake of this post let's accept as true the EC's claims about Intel's specific actions. Second, let's set aside the details of European law and instead ask whether Intel's actions were fair and justified. Third, let's assume that there is a single market for processor chips, in the sense that any processor chip can be used in any system. A serious analysis would have to consider carefully all of these factors, but these assumptions will help us get started.

With all that in mind, does the EC have a plausible case against Intel?

First we have to ask whether Intel has monopoly power. Economists define monopoly power as the ability to raise prices above the competitive level without losing money as a result. We know that Intel has high market share, but that by itself does not imply monopoly power. Presumably the EC will argue that there is a significant barrier to entry which keeps new firms out of the microprocessor market, and that this barrier to entry plus Intel's high market share adds up to monopoly power. This is at least plausible, and there isn't space here to dissect that argument in detail, so let's accept it for the sake of our analysis.

Now: having monopoly power, did Intel abuse that power by acting anticompetitively?

The EC accused Intel of two anticompetitive strategies. First, the EC says that Intel gave PC makers discounts if they agreed to ship Intel chips in 100% of their systems, or 80% of their systems. Is this anticompetitive? It's hard to say. Volume discounts are common in many industries, but this is not a typical volume discount. The price goes down when the customer buys more Intel chips -- that's a typical volume discount -- but the price of Intel chips also goes up when the customer buys more competing chips -- which is unusual and might have anticompetitive effects. Whether Intel has a competitive justification for this remains to be seen.

Second, and more troubling, the EC says that "Intel awarded computer manufacturers payments - unrelated to any particular purchases from Intel - on condition that these computer manufacturers postponed or cancelled the launch of specific AMD-based products and/or put restrictions on the distribution of specific AMD-based products." This one seems hard for Intel to justify. A firm with monopoly power, spending money to block competitor's distribution channels, is a classic anticompetitive strategy.

None of this establishes conclusively that Intel broke the law, or that the EC's fine is justified. We made a lot of assumptions along the way, and we would have to reconsider each of them carefully, before we could conclude that the EC's argument is correct. We would also need to give Intel a chance to offer pro-competitive justifications for their behavior. But despite all of these caveats, I think we can conclude that although it is far from proven at this point, the EC's case should be taken seriously.

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A Modest Proposal: Three-Strikes for Print

Yesterday the French parliament adopted a proposal to create a "three-strikes" system that would kick people off the Internet if they are accused of copyright infringement three times.

This is such a good idea that it should be applied to other media as well. Here is my modest proposal to extend three-strikes to the medium of print, that is, to words on paper.

My proposed system is simplicity itself. The government sets up a registry of accused infringers. Anybody can send a complaint to the registry, asserting that someone is infringing their copyright in the print medium. If the government registry receives three complaints about a person, that person is banned for a year from using print.

As in the Internet case, the ban applies to both reading and writing, and to all uses of print, including informal ones. In short, a banned person may not write or read anything for a year.

A few naysayers may argue that print bans might be hard to enforce, and that banning communication based on mere accusations of wrongdoing raises some minor issues of due process and free speech. But if those issues don't trouble us in the Internet setting, why should they trouble us here?

Yes, if banned from using print, some students will be unable to do their school work, some adults will face minor inconvenience in their daily lives, and a few troublemakers will not be allowed to participate in -- or even listen to -- political debate. Maybe they'll think more carefully the next time, before allowing themselves to be accused of copyright infringement.

In short, a three-strikes system is just as good an idea for print as it is for the Internet. Which country will be the first to adopt it?

Once we have adopted three-strikes for print, we can move on to other media. Next on the list: three-strikes systems for sound waves, and light waves. These media are too important to leave unprotected.

[Français]

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