I have a dead tree document. In order to reduce the risk of being compromised, I

Question

I have a dead tree document. In order to reduce the risk of being compromised, I would like to digitize and encrypt the document, and then destroy the physical copy.

Let's assume my computer itself is secure (since if not, this discussion becomes moot). Let's further allow that I am very paranoid and suspect the scanner as the weak link in the chain.

Is it common for scanners to somehow cache or log documents they scan (on the scanner machine itself)? Does scanner driver/software often have temporary folders which end up leaving a trace of the document? Can a networked scanner maliciously or accidentally distribute the file to third parties (over the LAN/WAN or the internet)?

What steps can be realistically taken to minimize the risk?

Explanation / Answer

You are somehow thinking that dead tree docs are less secure than digital copies. I may venture to say you are mistaken in this belief.

Digital data may be stolen in a myriad different ways. The scanner may be reporting to HP or other companies/agencies, while your computer may be already compromised. Your computer will have vestigial data on the hard drive. Use of encryption may warrant unwanted attention.

Last, but not least: you can lose a digital copy much easier than the original. All it takes is one inopportune kick to the hard drive or static discharge, or simply a forgotten password. To overcome this, you will be forced to make multiple backups, store the password somewhere etc. etc.

If you are really intent on digitizing the document, take a fresh memory card for your camera and make a few photos. Stash the card somewhere secure.

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