But this requires a flashdrive to go back and forth. So how much does that compromise security?
I can tell you that you should use SD cards,
I assume the user is using Windows, if so an SD card is mounted as a drive the same as a flash drive, if it was to be infected with malware or ransomware it'd still be infected/encrypted.
The only safe thing to do is to have it backed up on multiple locations.
If you desperately want to use SD Cards or USB drives/flash drives go out and by three high quality ones.
Use one for the daily use every day, another with a backup you update whenever possible and that can be left within your cupboard somewhere in your house. Then the third one which is a backup of the backup should live in a location that is not your home/office, it needs to be a different geographical location aka - storage shed, safe deposit box, wherever you have somewhere else safe you can keep it.
This 3 step backup solution is now protecting you from the following:
- USB Failure / corruption
- Ransomware / Cryptolocking
- Natural disaster
- Loss of USB Drive OR accidental deletion
- The event that someone breaks into your house and steals all your tech
If you have any other questions shout out.