Joanna Rutkowska described a way to avoid this back in 2011 (https://theinvisiblethings.blogspot.com/2011/09/anti-evil-maid.html https://theinvisiblethings.blog

Joanna Rutkowska described a way to avoid this back in 2011 (https://theinvisiblethings.blogspot.com/2011/09/anti-evil-maid.html https://theinvisiblethings.blogspot.com/2011/09/anti-evil-ma...), I extended it to be more usable in 2015 (https://mjg59.dreamwidth.org/35742.html https://mjg59.dreamwidth.org/35742.html). Both solutions make use of a TPM.