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The firmware of the external drive deactivates write access if the button is switched accordingly.

The firmware of the external drive deactivates write access if the button is switched accordingly.

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[–] 1 pt

Yeah that's what I was going for. If it was a hardware killswitch on the SD card, then the device trying to read it wouldn't have a choice. But, as you mentioned, it's just a flag that the device can choose to ignore. Which seems really stupid imo.

[–] 1 pt

But if the device respects that switch, malware could not damage the SD card.

[–] 1 pt

Good point. Though, I doubt the read/write device respects the switch in it's hardware. Ie. malware in the read/write device could disable said devices respect of the SD switch.

[–] 0 pt

Yes, malware might be able to hack into the firmware of the SD card reader, but that is unlikely because of the vendor diversity and too much work for those with bad intentions.