(Update: we've added a few engineers who asked to sign on right as the letter was going out; the final count is 96 signatures)

Today, 87 prominent Internet engineers sent a joint letter the US Senate Judiciary Committee, declaring their opposition to the "Combating Online Infringement and Counterfeits Act" (COICA). The text of the letter is below.

Readers are encouraged to themselves write the Senate Judiciary Committee and ask them to reject this bill.

We, the undersigned, have played various parts in building a network called the Internet. We wrote and debugged the software; we defined the standards and protocols that talk over that network. Many of us invented parts of it. We're just a little proud of the social and economic benefits that our project, the Internet, has brought with it.

We are writing to oppose the Committee's proposed new Internet censorship and copyright bill. If enacted, this legislation will risk fragmenting the Internet's global domain name system (DNS), create an environment of tremendous fear and uncertainty for technological innovation, and seriously harm the credibility of the United States in its role as a steward of key Internet infrastructure. In exchange for this, the bill will introduce censorship that will simultaneously be circumvented by deliberate infringers while hampering innocent parties' ability to communicate.

All censorship schemes impact speech beyond the category they were intended to restrict, but this bill will be particularly egregious in that regard because it causes entire domains to vanish from the Web, not just infringing pages or files. Worse, an incredible range of useful, law-abiding sites can be blacklisted under this bill. These problems will be enough to ensure that alternative name-lookup infrastructures will come into widespread use, outside the control of US service providers but easily used by American citizens. Errors and divergences will appear between these new services and the current global DNS, and contradictory addresses will confuse browsers and frustrate the people using them. These problems will be widespread and will affect sites other than those blacklisted by the American government.

The US government has regularly claimed that it supports a free and open Internet, both domestically and abroad. We can't have a free and open Internet without a global domain name system that sits above the political concerns and objectives of any one government or industry. To date, the leading role the US

has played in this infrastructure has been fairly uncontroversial because America is seen as a trustworthy arbiter and a neutral bastion of free expression. If the US suddenly begins to use its central position in the DNS for censorship that advances its political and economic agenda, the consequences will be far-reaching and destructive.

Senators, we believe the Internet is too important and too valuable to be endangered in this way, and implore you to put this bill aside.