I am interested in technology policy as it applies to freedom of speech:
copyright law, cryptography law and policy, intellectual property,
and scholarly inquiry. I have also studied and taught on issues relating
to voting machines.
Securing the Vote: Protecting American Democracy,
by National Academies of Science, Engineering, and Medicine:
Lee C. Bollinger, Michael A. McRobbie, Andrew W. Appel, Josh Benaloh, Karen Cook, Dana DeBeauvoir, Moon Duchin, Juan E. Gilbert, Susan L. Graham, Neal Kelley, Kevin J. Kennedy, Nathaniel Persily, Ronald L. Rivest, Charles Stewart III.
blog at Freedom-to-Tinker
Reexamination of an all-in-one voting machine
Voting machines I recommend
BMDs are not meaningfully auditable
ImageCast Evolution voting machine: Mitigations, misleadings, and misunderstandings
How to do a Risk-Limiting Audit
Are voting-machine modems truly divorced from the Internet?
Securing the Vote — National Academies report
Serious design flaw in ESS ExpressVote touchscreen: “permission to cheat”
Design flaw in Dominion ImageCast Evolution voting machine
Continuous-roll VVPAT under glass: an idea whose time has passed
An unverifiability principle for voting machines
Ten ways to make voting machines cheat with plausible deniability
Cheating with paper ballots
End-to-End Verifiable Elections
When the optical scanners jam up, what then?
Two cheers for limited democracy in New Jersey
Florida is the Florida of ballot-design mistakes
Expert opinions on in-person voting machines and vote-by-mail
Why voters should mark ballots by hand
Pilots of risk-limiting election audi
ts in California and Virginia
Apple/FBI: Freedom of speech vs. compulsion to sign
Internet Voting, Utah GOP Primary Election
Internet Voting? Really?
Security against Election Hacking – Part 1: Software Independence
Security against Election Hacking – Part 2: Cyberoffense is not the best cyberdefense!
Which voting machines can be hacked through the Internet?
My testimony before the House Subcommittee on IT
Freedom to Tinker on the Radio
A clear line between offense and defense
Oral arguments in NJ voting-machines lawsuit appeal
Ed Felten elected to National Academy
Copyright in Scholarly Publishing, 2012 Edition
Modest Proposals for Academic Authors
Contract hacking and community organizing
Oral Arguments 12/4 in NJ Voting-Machine Lawsuit
NJ Lt. Governor invites voters to submit invalid ballots
Voting machine lawsuit, oral arguments, venue change
all the electrical and hydraulic appliances in your house
on NJ voting machines, 2004-2008
on NJ voting machines, October-December 2008
trick to defeating tamper-indicating seals
an expert on seals has to say
on NJ voting machines, March 2009
on NJ voting machines, as of 2011
seals can't secure elections
NJ election officials fail to respect court order to improve security of
the NJ Attorney General investigate the NJ Attorney General?
happens when the printed ballot face doesn't match the electronic ballot
Access to Scholarly Publications at Princeton
Bureau assigns fox to guard henhouse
filed in NJ voting-machines lawsuit
Warrant Necessary to Seize Your Laptop
a denial-of-service attack cause the stock-market "flash crash?"
a denial-of-service attack cause the flash crash? Probably
permits release of unredacted report on AVC Advantage
court permits release of post-trial briefs in voting case
the mystique of tamper-indicating seals
voting extremely accurate in Minnesota
Voting-machine trial update
Voting-machine trial: Plaintiffs' witnesses
Voting-machine Trial: Defense Witnesses
of Financial Derivatives
Suppresses Report on Voting Machine Security
on the Sequioa AVC Advantage
Voters Disenfranchised in Louisiana
Re-enfranchises Independent Voters
Machines are Silent in Princeton Today
Seals on AVC Advantage Voting Machines are Easily
Explains Guilt by Association
as a Telecom Profit Center
On academic publishing in the 21st century:
Digital Rights Management and Free Speech
Self-help getting to the New System, a short article I wrote studying how
Computer Scientists and Political Scientists distribute
their own papers through their web sites, October 2007.
I advised the undergraduate research of Alex Halderman,
"Evaluating New Copy-Prevention Techniques for Audio CDs",
which he presented at
DRM 2002: 2002 ACM Workshop on Digital Rights Management.
My court declaration in
the Felten v. RIAA
case. Filed in United States District Court, Trenton, NJ, August 13, 2001.
The Speech is a Machine, freshman seminar course, taught Spring 2001.
Universal Studios v. Reimerdes - Appeal Brief of Amici Curiae. Harold Abelson, Andrew W. Appel, et al. Filed in United States Court of Appeals for the Second Circuit,
January 23, 2001.
My court declaration (local copy) in the
Universal Studios v. Reimerdes
DVD case. April 2000.
Technological Access Control Interferes with
Noninfringing Scholarship, by Andrew W. Appel and Edward W. Felten.
February 17, 2000.
Submitted in response to the
Office's request for comments
on what classes of works should be
exempted from the Digital Millennium Copyright Act's prohibition on
circumventing technological measures that control access to
Also published in Communications of the ACM 43 (9) 21-23,
I testified as an expert witness in the Microsoft antitrust
My court declaration in the
Junger cryptography case. September 1997.
In an opinion dated April 4, 2000, the
United States Court of Appeals for the Sixth Circuit holds in
Junger v. Daley:
Because computer source code is an expressive means for the exchange
of information and ideas about computer programming, we hold that it is
protected by the First Amendment.
court declaration in the
cryptography case. March 1996.
In an opinion dated May 6, 1999, the
United States Court of Appeals for the Ninth Circuit holds:
In light of these considerations, we conclude that
encryption software, in its source code form and as
employed by those in the field of cryptography, must be
viewed as expressive for First Amendment purposes, and thus
is entitled to the protections of the prior restraint doctrine.
Security and document compatibility for electronic
refereeing. Andrew W. Appel. CBE Views 20(1), 1997, published by the
Council of Biology Editors.
to Edit a Journal by E-mail. Andrew W. Appel.
Journal of Scholarly Publishing, vol. 27, no. 2, pp. 82-99, January