User privacy

[Ian Bruntlett]

Hi,

On Tue, 16 Feb 2021 at 20:08, Robert Heller <heller at deepsoft.com> wrote:

> The *long term* solution might be to get the daughter a cheap laptop of
> her
> own.  But, setting the home directories to o-rwx will certainly do the
> job.  I
> suspect that files on /tmp are not likely to be a major issue.
>

Yes, the home directory permission setting seems to have worked.

I looked into the /tmp vulnerability. From my experiments, both users could
read each other's /tmp files. However, I found that if I rebooted the
system, the files would disappear from /tmp . But if a user logged out and
the other user logged in, they could see the /tmp files.

I also set umask 007 in ~/.bashrc and experimented. It made /tmp files
private to a user, sorting out that problem.

TIA,


Ian

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