There's some truth in the Czechoslovakian proverb I used for the title of this post, as we've been recently discussing in designing how to deal with security issues in itsme OS. We realized there's a huge amount of possibilities and of different factors influencing strategies that can be adopted, and (in our case) they're multiplied by the fact that we're designing a complex system, with a lot of potentially vulnerable points. I won't go into technical details, but just present the main points our discussion started from. It seems that all existing operating systems are not entirely secure, and they're...