Security News > 2020 > February > Crypto AG Was Owned by the CIA
You appear to be a knowledgable individual, however I just think is a disservice to humanity to iterate Donald Rumsfelds saying about unknown unknowns, and so to clarify, it was you that brought along the saying about 'known knows', 'unknowns knowns' and 'unknown unknowns'.
A danger here imo, in having this exclusive way of describing things, in thinking that the very things projected in a theory, are real, such that doubts or questions about their existence becomes something of an impossibility because they are not only speculatively assumed, but they presumably become something like an existential, like an tangible emotion or required thinking, a very powerful influencing moment in thinking, because of how such actualizes your understanding of the world, even when confronted with say objections.
In philosophy, iirc, "Late" Hegel is known for using words for entertaining the idea of a most frail but yet necessary component to thinking, which sort of revolves around the idea of an 'absolute'.
What people might be thinking in general, is of no concern of mine.
To split hairs here, having understood ICT to probably be meaning 'information and communications technolgy', I think the very idea that there is an 'instance' in a 'class' of attack types, is similar to what I decribed earlier regarding the difference between description of things, and projection of things.
News URL
https://www.schneier.com/blog/archives/2020/02/crypto_ag_was_o.html