Thanks for the feedback, and apologies for not replying earlier. I
have posted an updated draft on 
http://www.gingerlime.com/20090829__sage_msc_proj_draft.pdf

Please see sections 4.1 and 5.4.4 where I documented the sagenb.org
setup more clearly. I mentioned it is already using virtualisation and
the benefits it brings.

On Aug 26, 9:45 am, Martin Albrecht <[email protected]>
wrote:
> Hi,
>
> > One thing you repeatedly mention is that sniffing data/credentials
> > may be possible on the public server. I don't think this is ever high
> > risk, as anyone doing "sensitive" computations shouldn't be using
> > someone else's hardware to do it (SSL encrypted connection or not),
> > especially as it is so easy to run your own personal copy of Sage
> > (locally or somewhere that you trust). Also, by default, there's a
> > big warning on running without https on anything but localhost.
>
> With the same argument you could say one shouldn't use webmail or e-mail at
> all if one thinks e-mail is private. Also, it is not only issues with
> sensitive computations but SSL would mitigate quite a few threats Yoav pointed
> out (spoofing, attacks on others, etc.)
>
> > Encrypting and authenticating worksheets seems beyond the scope of
> > what the Sage notebook should do, there are plenty of 3rd party tools
> > to do this cleanly and it's obvious (I hope) that sharing worksheets
> > is sharing code. The %auto keyword could be bad though.
>
> I agree that downloading and mailing worksheets might be beyond the scope of
> Sage but sharing within Sage certainly isn't.
>
> Also, for the download-and-share situation it would be very easy to add some
> protection because Sage has all the relevant crypto-protocols available
> anyway. It would send a clear signal that we care about security and would be
> relatively easy to implement.
>
> Cheers,
> Martin
>
> --
> name: Martin Albrecht
> _pgp:http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99
> _otr: 47F43D1A 5D68C36F 468BAEBA 640E8856 D7951CCF
> _www:http://www.informatik.uni-bremen.de/~malb
> _jab: [email protected]
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