On Thursday, August 22, 2013 11:53:07 AM UTC-7, jason wrote:

> I think the best way to distribute a runnable cell server is as a 
> virtual machine image.  At least then it is sandboxed into a virtual 
> machine where someone has seriously considered the security implications. 
>
 
+1

The inherent insecurity of sagecell has prevented me from recommending it 
to people to use in course materials.

Even using a "public" cell server run by someone else seemed like a bad 
idea because such a service could disappear at any time due to abuse (and 
now you're left with defunct course materials!)

I didn't see how to set it up with acceptable security within a university 
either. If it were available as a plug-in on some authenticated platform 
(the university's CMS) AND running in a closed-off sandbox it would 
probably be acceptable, even if the plug-in wasn't logging the identities 
with the transactions, because at least it wouldn't appear to be anonymous, 
and as long as the service is only accessible through an authenticated 
gateway, at least the population of possibly attackers is drastically 
reduced (and reduced to a group who probably feel they benefit from keeping 
the service alive)

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