Internet Law: Cases and Problems (Semaphore Press)

Search Engines

Speech Engines, 98 Minnesota Law Review 868 (2014) by-img

Some Skepticism About Search Neutrality, in The Next Digital Decade: Essays on the Future of the Internet (Berin Szoka & Adam Marcus eds., TechFreedom 2010) by-img

The Google Dilemma, 53 New York Law School Law Review 939 (2009) by-img

Information Policy for the Library of Babel 3 Journal of Business and Technology Law 29 (2008) by-img

Don’t Censor Search 117 Yale Law Journal Pocket Part 48 (2007) by-img

The Structure of Search Engine Law, 93 Iowa Law Review 1 (2007) by-img


Indistinguishable from Magic: A Wizard’s Guide to Copyright and 3D Printing, 71 Washington and Lee Law Review 683 (2014) by-img

Three Theories of Copyright in Ratings, 14 Vanderbilt Journal of Entertainment and Technology Law 851 (2012) by-img

The Ethical Visions of Copyright Law, 77 Fordham Law Review 2005 (2009) by-img

Google Books Settlement

Future Conduct and the Limits of Class-Action Settlements, 91 North Carolina Law Review 387 (2013) by-img

The Orphan Wars, EDUCAUSE Review, Jan./Feb. 2011, at 48 by-img

The Elephantine Google Books Settlement, 58 Journal of the Copyright Society of the U.S.A. 497 (2011)

D Is for Digitize: An Introduction, 55 New York Law School Law Review 11 (2010) by-img

The Amended Google Books Settlement Is Still Exclusive, CPI Antitrust Journal (Jan. 2010) by-img

The Google Settlement: Why It Matters, Publishers Weekly (Nov. 23, 2009)

Objections to the Google Books Settlement and Responses in the Amended Settlement

The Google Book Search Settlement: Ends, Means, and the Future of Books, American Constitution Society Issue Brief (Apr. 15, 2009) by-img

How to Fix the Google Book Search Settlement, Journal of Internet Law, April 2009, at 1 by-img

Software and the Internet

The Illegal Process: Basic Problems in the Making and Application of Censorship 79 University of Chicago Law Review Dialogue 57 (2013) (responding to Derek E. Bambauer, Orwell’s Armchair, 79 University of Chicago Law Review 863 (2012)) by-img

Sealand, HavenCo, and the Rule of Law, 2012 University of Illinois Law Review 405 by-img

Dr. Generative or: How I Learned to Stop Worrying and Love the iPhone, 69 Maryland Law Review 910 (2010) (with Paul Ohm) (reviewing Jonathan Zittrain, The Future of the Internet—And How to Stop It (2008)) by-img

The Internet Is a Semicommons, 78 Fordham Law Review 2799 (2010) by-img

Regulation by Software, 114 Yale Law Journal 1719 (2005) by-img

Seven Ways in Which Code Equals Law (with Cindy Cohn), in Code: The Language of Our Time (Christine Schipf et al. eds., Hatje Cantz 2003) by-imgnc-img

This essay is a slightly edited version of an address Cindy Cohn delivered at the Ars Electronica festival in 2003. It is available under a Creative Commons license thanks to generous permissions from her and from Ars Electronica.


First-Class Objects, 9 Journal on Telecommunications and High Technology Law 421 (2011) by-img

Known and Unknown, Property and Contract: Comments on Hoofnagle and Moringiello, 5 Brooklyn Journal of Corporate, Financial, and Commercial Law 85 (2011) by-img

The Privacy Virus, in Facebook and Philosphy (Dylan Wittkower ed., Open Court 2010)

Privacy as Product Safety, 26 Widener Law Journal 793 (2010) by-img

The Unmasking Option, 87 Denver University Law Review Online 23 (2010) by-img

Saving Facebook, 94 Iowa Law Review 1137 (2009) by-img

Saving Facebook: A Response to Professor Freiwald, 95 Iowa Law Review Bulletin 13 (2009) by-img

Accidental Privacy Spills, Journal of Internet Law, July 2008, at 3 by-img

Virtual Worlds

Virtual World Feudalism, 118 Yale Law Journal Pocket Part 126 (2009)

Virtual World Law in Busines and Legal Primer for Game Development (S. Gregory Boyd & Brian Green eds., Charles River Media 2006)

Virtual Power Politics in The State of Play: Law, Games, and Virtual Worlds (Jack M. Balkin & Beth S. Noveck eds., N.Y.U. Press 2006) (draft PDF) by-img

Virtual Borders: The Interdependence of Real and Virtual Worlds, First Monday (Feb. 2006) by-img

Virtual Worlds as Comparative Law, 49 New York Law School Law Review 147 (2004) by-img

Jotwell Reviews

Discrimination by Database, Jotwell: Cyberlaw (Nov. 2014) (reviewing Solon Barocas and Andrew Selbst, Big Data’s Disparate Impact (draft 2014)) by-img

The Cancer of the Internet, Jotwell: Cyberlaw (Nov. 2013) (reviewing Finn Brunton, Spam: A Shadow History of the Internet (2013)) by-img

If Code Is Law, Then Coders are Lawyers, Jotwell: Cyberlaw (Dec. 2012) (reviewing E. Gabriella Coleman, Coding Freedom: The Ethics and Aesthetics of Hacking (2012)) by-img

Undiplomatic Immunity, Jotwell: Cyberlaw (Nov. 2011) (reviewing Felix T. Wu, Collateral Censorship and the Limits of Intermediary Immunity, 87 Notre Dame Law Review 101 (2011)) by-img

Good Faith Scholarship, Jotwell: Cyberlaw (Oct. 2010) (reviewing Joseph Michael Reagle Jr., Good Faith Collaboration: The Culture of Wikipedia (2010)) by-img

Third Parties to the Rescue, Jotwell: Cyberlaw (Nov. 2009) (reviewing Michael Risch, Virtual Third Parties, 25 Santa Clara Computer & High Technology Law Journal 416 (2009)) by-img


The Merchants of MOOCs, 44 Seton Hall Law Review 1035 (2014) by-img

Copyright, Technology, and Access to the Law: An Opinionated Primer (2008) by-img

Cybercrime: Digital Cops in a Networked Environment (Jack M. Balkin, James Grimmelmann, Eddan Katz, Nimrod Kozlovski, Shlomit Wagman, and Tal Zarsky eds., N.Y.U. Press 2007)

Modeling Facts, Culture, and Cognition in the Gun Debate, 18 Social Justice Research 283 (2005) (with Donald Braman and Dan M. Kahan)

Amicus Briefs

Brief of Amicus Curiae James Grimmelmann, Berry v. LexisNexis Risk & Information Analytics Group, Inc. (4th Cir. 2014)

Brief of 36 Intellectual Property and Copyright Law Professors as Amici Curiae, ABC, Inc. v. Aereo, Inc. (U.S 2014) (with David Post)

Brief of Amicus Curiae Electronic Frontier Foundation, OpenMind Solutions, Inc. v. Does 1-2925 (S.D. Ill. 2011) (with Julie Samuels)

Brief of Amicus Curiae Institute for Information Law and Policy, New York Law School, Authors Guild v. Google Inc. (S.D.N.Y. 2009)

Supplemental Letter (2010)


What to Do Aobut Google?, Communications of the ACM, September 2013, at 28 (draft PDF) by-img

Why Johnny Can’t Stream: How Video Copyright Went Insane, Ars Technica (August 30, 2012)

Death of a Data Haven: Cypherpunks, WikiLeaks, and the World’s Smallest Nation, Ars Technica (March 27, 2012)

Owning the Stack: The Legal War to Control the Smartphone Platform, Ars Technica (Sept. 11, 2011)

Total Information Awareness, The New Republic (online ed.) (Dec. 11, 2008)

Koans of Equity, 58 Journal of Legal Education 472 (2008) by-img

SSRN Considered Harmful by-img

Bunnies, Ducks, and One Great Dane, (Jan. 2002) by-img

Peer-to-Peer Terrorism, (Sept. 26, 2001) by-img

From Each According to His IPO, (Apr. 25, 2001) by-img

My Week, Grist Magazine (Oct. 2000) by-img

This series of diaries is available under a Creative Commons license through kind permission from Grist.

Quantum Computation: An Introduction (unpublished undergraduate thesis 1999) by-img

Elements of the Theory of Computation (2d ed.): Solutions Manual (Prentice-Hall 1999)

Please do not ask me for a copy. I do not own the copyright, and I am not in a position to verify teachers’ credentials. All inquiries should be directed to Prentice-Hall.

Finding Every Loophole, Harvard Crimson (Oct. 1, 1998)

Welcome to Microsoft: Here Be Dragons, Harvard Computer Review (Sept. 1997) by-img

Towards a More Flexible Core, Harvard Crimson (Apr. 10, 1997) (with Sarah Hurwitz and Benjamin Rahn)

Copyright Explanations

In general, please treat the permissions here as the beginning of a conversation, not the end. If you reuse one of my works, I’d love to hear about it, especially if you do something transformative and clever with it. And if you’d like to do something that would require further permisssion, please contact me also. The necessary rights aren’t always mine to grant, but where they are, I’ll give serious consideration to any polite request.

Note also that you have a number of blanket privileges under copyright law that apply regardless of whether I’ve specifically granted permission or not. First, copyright doesn’t protect ideas, only particular expressions of them. I’ll be upset if you plagiarize my ideas, but that doesn’t give me a legal right to stop you. Second, United States copyright law contains numerous specific exceptions, although the conditions are often quite technical. Third, you have extensive fair use rights. In general, the following kinds of uses tend to be legal (but remember that this list is not exhaustive):

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