I'm looking for the article for a project. It is fairly recent, may have been a news article, or a blog. It in turn might have referenced a scholarly paper.
Anyway, the gist of the article was that because modern computers are so complex, it is very easy to introduce insecure hardware into a process. There was apparently an incident because some laptops brought to an inspection site (maybe NATO or UN) were being used to eavesdrop and funnel logged data to a hostile 3rd party.
The argument was to use Apple II or some other older technologies instead because it is much simpler and more easy to verify if correct.
If this rings a bell with anyone, would really appreciate getting the link to it.