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How do you protect a remote backup from a compromised account? (lemmy.zip)

submitted 1 week ago by eyesaremosaics@lemmy.zip 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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[–] TheFogan@programming.dev 2 points 1 week ago

I mean depends on the solution you are using, but you can have multiple accounts on the remote backup. IE so upon completion of the backup. The remote machine moves the backup to an offline or read only share (depending if you need those credentials to access the data again later),

Obviously most important thing is your credentials that make the backup... should be very limited in scope to just doing those backups.