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Cake day: November 14th, 2023

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  • Blue_Morpho@lemmy.worldtoSelfhosted@lemmy.worldHelp me harden my home server
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    12 hours ago

    You might want to consider that backups only protect very old data from ransomware.

    Ransomware works by getting on a machine and sitting for several months before activating. During that time, your data is encrypted but you don’t know because when you open a file, your computer decrypts it and shows you what you expect to see. So your backups are working but are saving files that will be lost once the ransom ware activates.

    The only solution is to frequently manually verify the backup from a known safe computer. Years ago I looked for something to automate this but didn’t find it. (Something like a raspberry pi with no Internet that can only see the PC it’s testing, compares a known file, then touches the file so it gets backed up again.)