This from David Weinberger via Euan:

1. Open, transparent environments are more secure and more stable than closed, opaque ones.
2. While Internet services can be interrupted, the Internet as a global system is ultimately resilient to attacks, even sophisticated and widely distributed ones.
3. The connectedness of the Internet – people talking with people – counters the divisiveness terrorists are trying to create.
4. The openness of the Internet may be exploited by terrorists, but as with democratic governments, openness minimizes the likelihood of terrorist acts and enables effective responses to terrorism. fertile ground…