Found the page I had mentioned earlier: https://pawitp.medium.com/the-correct-way-to-use-secure-boot-with-linux-a0421796eade https://pawitp.medium.com/the-corre

Found the page I had mentioned earlier: https://pawitp.medium.com/the-correct-way-to-use-secure-boot-with-linux-a0421796eade https://pawitp.medium.com/the-correct-way-to-use-secure-boot... . In the comments Aleksandar mentioned the possibility of using the attack mentioned in this article and the author replied back with the same solution of verifying a secret file on the root partition.