Comment on Is using MicroSD cards a good way to store data that you can destroy quickly incase an adversary is about to seize control of it?

• asudox@lemmy.asudox.dev ⁨4⁩ ⁨days⁩ ago

  Your best bet would be probably to shred the card with multiple iterations and then break the card physically.

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  • GreatBlue@infosec.pub ⁨2⁩ ⁨days⁩ ago

    Shredding might not work the way you expect on a SD card.

    The memory cells in a SD Card can only handle a limited amount of write operations. A SD card typically has more cells than needed, so the controller can switch through different cells to improve the overall lifetime of the card. Which means you can’t be sure which cells gets rewritten when shredding, so the data you want to be gone, could still be readable.

    If you want to secure your data, use strong encryption. Because what you gonna do, if you can’t destroy or get rid of the SD card?

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    • Glory_of_Fire@lemmy.world ⁨15⁩ ⁨hours⁩ ago

      So I probably shouldn’t store my MacOS time machine backups on a 250GB microSD card? (It was the only practical thing I had when I started it and I never got around to changing it)

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      • GreatBlue@infosec.pub ⁨7⁩ ⁨hours⁩ ago

        I don’t know how MacOS time machine works exactly, but if it constantly writes on the SD card you should consider changing to an external SSD or HDD. The best backup isn’t helpful if your backup medium dies.

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    • admin@sh.itjust.works ⁨2⁩ ⁨days⁩ ago

      So that’s why I recovered 4GB of pictures out of a 1GB card from my dad’s camera huh? TIL

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  • Worx@lemmynsfw.com ⁨4⁩ ⁨days⁩ ago

    I was going to say burn it too.

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    • eodur@lemmy.world ⁨4⁩ ⁨days⁩ ago

      And if you really want to burn it good look into getting/making thermite.

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• Blue_Morpho@lemmy.world ⁨3⁩ ⁨days⁩ ago

  Yes

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