Earlier quoted context omitted.
Can you elaborate a bit more please? This sounds almost as if you configured a network adapter to only send and not receive, but you used "optics", so I'm guessing you refer to some sort of fibre-based device that actually impedes light to go in the other direction, and thus the security is via physical means?
> so I'm guessing you refer to some sort of fibre-based device that actually impedes light to go in the other direction, and thus the security is via physical means? Correct. To simplify, imagine a diode on one side and a photodetector cell on the other. On a microcontroller, this would be an opto-isolator ( http://en.wikipedia.org/wiki/Opto-isolator ). Of course, the higher levels of the OSI protocol you're using ne…
And if you want to 'leave no space', why fill up a disk with 'random files' rather than just a single file that uses up all the space? If you're going to the lengths of encryption + airgap + cloudantivirus (!) + etc, you're a power user at this point, so why not just consume all space rather than just collect together files?
And hell, if you're being that paranoid, then use the paranoid OS for your desktop, OpenBSD. Why go to all the effort in the article and not take the extra step to get familiar with an OS that has an earned reputation for security, and that most exploit-writers don't target? I mean, OpenBSD does OOo and pdfs as indicated in the article - what's this airgapped PC going to be doing that requires Windows in particular?
It's ironic that this author people turn to for commentary against 'security theatre' writes articles doing the same.