LiveCD: How to set rootpassword? Security considerations?

[Mario Vukelic]

On Fri, 2008-04-04 at 06:52 -0400, sleepyvulva at lavabit.com wrote:
> When using an Ubuntu LiveCD, everything runs as root or some kind of
> ultimate sudo power, right? I have a few questions:
> 
> 1. How may I change or set a password on the LiveCD during use?

What for?

> 2. If I use a USB stick is it possible to backup the password setting and
> other settings? How do I do this? (I'm making my own Ubuntu LiveCD with
> remastersys and disabling the use of the hard disk drive for any caching
> in favor of using a USB thumb drive for this)

https://help.ubuntu.com/community/LiveCDPersistence

> 3. Are there any special security considerations for a LiveCD user on
> broadband? You're running as a superuser to some degree, right? Isn't
> every application running with higher powers now? Is my hard disk drive
> data at risk during the time I am using an Ubuntu LiveCD?

Do you start any services that open ports while running the live CD? I
suppose not, and so the whole issue is irrelevant: there are no
exploitable services, so nobody can connect to you.