For the purpose of setting in place the appropriate means of securing data, and to secure this process, I'm asking me the questions:
- What are the tools to associate to a document a categorization label (for example: TOP SECRET)?
- Does a tool which prohibit label removal exists?
For example, one method some may imagine to adopt could consist in:
- for text documents place in the header and footer of every page a centered red box containing in upper case letter the text: TOP SECRET,
- crypt this file with a high grade uniq password and a strong method;
- write down this uniq password on a paper labelled TOP SECRET and put it in a safe,
- move the crypted file on a safely erased USB key wearing a TOP SECRET red label,
- safely erase all the disks of the OS where the original Microsoft Word document was and consequently any visible or hidden temporary file,
- only open this file on a safe OS (Windows less, Internet less) within a safe office (tempest and light proof).
But this piece of policy, how heavy and expensive might it be, won't prohibit the voluntary or accidental removal of the label.