Genuinely, at this point you should just assume 100% of your electronics are compromised by someone. If it’s not a government (yours or otherwise) then a corporation will fill the gaps (while in most cases also giving it to those governments)
You should assume you have no privacy anywhere in your life.
If the NSA had hardware backdoors everywhere, it seems to me there would be no need for TAO or hoards of 0-days. And yet we know from the Snowden leaks that the NSA invests a lot in that stuff, correct?
I have a laptop with no communications functioning and I'm sure it is not compromised. The proof of it is openly stored the wallet.dat file with no any password.
Is the idea to challenge someone to prove you wrong?
Or are you suggesting that there no way for one of the aforementioned groups to recover your data remotely should they have a focused desire to recover it?
Idea is to challenge someone to propose a hardware + OS which can be as secure being online. Probably it has to be OpenBSD and the latest architecture with open BIOS.
You should assume you have no privacy anywhere in your life.