[no subject]

It often takes a combination of techniques used by as many people
as possible.  Good incident response teams for as many responsible
network operators as possible and continued, quicker deployment of
best practices to as many network operators, end users and systems
developers as possible.

...or you architecturally change the Internet or not use the Internet.
For example, go back to dumb end systems and place all the control
into the network operated by a select few (e.g. the traditional
telephone model).  You potentially lose all the good properties the
current architecture has and you aren't going to get everyone to
change with you anytime soon.

I highly recommend Bruce Schneier's book Secrets and Lies, which
applies to so much of all these problems and gives you a lot more
to think about in a much more readable way than what I have said
here.  It is especially insightful with regards to all the non-
technical problems and non-technical responses to the problems.

John