For those of you who are using linux: Are you using secure boot? I.e. is your bootloader configured to only decrypt your disk and boot your OS, while blocking all “booting from USB stick” and such?
I’m asking because i’m considering a very specific attack vector, through which a sufficiently skilled agent (e.g. FBI, CIA) could install a keylogger into your OS and get access to your sensitive data that way, even when your disk is encrypted and without your knowledge.
Well, I’m running Asahi Linux on a Macbook which can’t boot from USB even if I wanted to.
However, if you’re really worried about state-level threat actors, like FBI or CIA, I don’t believe there is much you could do to protect yourself anyway. They likely have entire catalogs of unpublished and undisclosed side-band attack exploits they could draw from to gain access to your machine and execute a privilege escalation to install whatever they want.