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How do you protect a remote backup from a compromised account? (lemmy.zip)
submitted 4 months ago by to c/selfhosted@lemmy.world
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Let's say you have access to a remote machine and use it to copy backups occasionally, eg with rsync. Your local machine has credentials stored that allow write access on the remote machine, however if the local account was compromised that could also allow access to the remote machine and the data stored there.

How can you grant access to an account to write remotely, but also protect the data from this account? One possibility could be to change the permissions on the data after it is copied to prevent deletion/interference, although I'm just making this up. Is there a standard practise for this?

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[–] 1 point 4 months ago (3 children)

Are you connecting to the victim to push a backup into storage? If so, there's SO much you should improve on that.

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  • [–] 1 point 4 months ago (1 child)

    What are the vulnerabilities that you're afraid of? Can you answer this purely from the info OP gave, i.e. without making assumptions about what the server authorizes the phone to do? OP's post does not indicate that they're violating the principle of least privilege in any way.

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  • [–] 1 point 4 months ago*

    OP’s post does not indicate that they’re violating the principle of least privilege in any way.

    If I wasn't sure whether that was a risk, I would have asked whether that's what was going on. Oh, wait: I did, right? I used a question mark and everything.

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