Alas, CPU. Namely ME[1] and FSP/SMM blob [2]. If you are wondering what's wrong with either of them, I would recommend Joanna Rutkowska's research as a startin

Alas, CPU. Namely ME[1] and FSP/SMM blob [2]. If you are wondering what's wrong with either of them, I would recommend Joanna Rutkowska's research as a starting point [3,4]. [1] https://libreboot.org/faq/#intelme https://libreboot.org/faq/#intelme [2] https://libreboot.org/faq/#fsp https://libreboot.org/faq/#fsp [3] http://blog.invisiblethings.org/papers/2015/x86_harmful.pdf http://blog.invisiblethings.org/papers/2015/x86_harmful.pdf [4] https://media.ccc.de/v/32c3-7352-towards_reasonably_trustworthy_x86_laptops https://media.ccc.de/v/32c3-7352-towards_reasonably_trustwor...