Sandboxing the browser tabs themselves is a big improvement  over
firefox/ie, but I feel that it isn't enough.  Any files downloaded
should remain jailed in a sandbox specific to the domain of its
origin, until and unless the user explicitly moves any of them out of
the sandbox.  I'm envisioning this being similar to one of the third-
party sandbox programs like Sandboxie, but instead of everything going
into one (or one of a few) explicitly-defined sandbox(es), a separate
sandbox should be created automatically for each domain as needed.

Of course we need a way to open such documents within the sandbox,
meaning that the application that opens it should be a separate
instance that is tainted to be able to write only within the sandbox.
I think some of the sandbox utilities do this, and Vista does
something similar by effectively separating domains by their
"integrity level," but it does not separate them by domain, so there's
nothing to stop malware from one site from modifying the data that you
send to another site of the same integrity level.

I know this is getting more towards the operating system level, but
what do you think?

david rosen


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