Safer backups with write-only Amazon S3 credentials

Photo of backup tapes

We can all agree that taking backups is important. We also agree that backups on the same medium as the backed up content are as good as no backup at all. This has led a lot of us to store our backups to the cloud, predominantly on cheap Amazon S3 storage. But how can we make sure that should the content server be compromised our backups will not be abused or deleted?

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