Aside from creating your own CPU at home, as demonstrated by this individual: https://blog.robertelder.org/how-to-make-a-cpu/

You may want to closely monitor developments around RISC-V and ARM CPUs if security is a top priority in your Linux hardening efforts. It’s crucial to remember that maintaining security extends beyond just your computer—it’s a multi-layered process.

Intel ME, AMD PSP, and motherboard-firmware.

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