I bought a 3d printer off Ebay which got delivered not too long ago, and it came with 2 sd cards - one with a build video and some demo print files, but worryingly another card that has all the previous owner’s personal files on there.
Not sure whether to format it, or to contact the seller offering to send the card back (free of charge)… how would you prefer to be approached in a similar situation?
Edit: No gcode files are on the card, just 30gb of pictures, music and videos. Sent the seller a message offering to upload it to cloud or to send the card back
It’s important to be careful and to treat storage devices like their contents came off the internet. I wouldn’t be opposed to some kind of (non-identifying) machine marker on partitions so the OS can track whether or not the disk has been inserted before, to treat the files on those disks the same way it treats downloaded files (i.e. apply the Mark of the Web) unless the disk is marked as trusted.
That said, this “only insert storage devices into an offline Linux laptop that you light on fire afterwards” type of advice doesn’t apply to moet people most of the time.
Never insert an unknown storage device into a computer you don’t own (i.e. a work machine), probably because there’s some kind of contract with repercussions for that sort of thing, but you’re probably free to look around it you think before you click.
This only applies if you update your stuff and reboot your computer when asked, off course. Treat any file from any source like toxic waste if you can’t be bothered to install updates.