I want to copy files onto a USB flash drive and prepare it in a way that makes the drive itself difficult to associate with the laptop used to load the files. Is formatting, encryption, or using another environment enough, and are there computer logs or filesystem details I should be aware of?
4 Answers
Encryption protects the files if the drive is lost, but it doesn’t make the drive anonymous. VeraCrypt or Cryptomator can encrypt the contents, though anyone with access to the computer may still be able to tell that a USB device was connected.
A normal flash drive generally doesn’t store a reliable identity of the computer that wrote files to it. Formatting it, preferably with a full overwrite when you need to remove previous contents, clears existing data but doesn’t erase activity records that may remain on the laptop.
If you want to minimize filesystem and operating-system artifacts, you could use a temporary Linux environment to format and copy the files. That can reduce traces on your regular installation, but it isn’t a guarantee of anonymity, and the files themselves may contain identifying metadata.
Check the laptop’s system and device logs. Many operating systems record USB connection events, device identifiers, mount points, or recent-file activity. Those records are stored on the computer rather than on the flash drive, so formatting the drive won’t remove them.

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