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Even if the ME was opened, the chips themselves are complex enough that nearly anything could be hidden. State machines that enable backdoors from instruction s
by kabdib 11y ago
Even if the ME was opened, the chips themselves are complex enough that nearly anything could be hidden. State machines that enable backdoors from instruction sequences can be pretty small (triggering these from a preferred vector, such as a web browser, seems hard-ish though).
- yuhong 11y agoI dislike how libreboot skips microcode updates.
- oconnore 11y agoOn the CPU: extract some bits from sequentially allocated memory, a la steganography. When those bits match a certain predicate, run a decryption and feed them into a subroutine. Now release a bunch of png, jpg, and mp4 media on the internet with the low order bits set to match.
- duskwuff 11y ago> triggering these from a preferred vector, such as a web browser, seems hard-ish though Easier than it used to be, though, especially given modern Javascript JIT compilers. (And that's to say nothing of more direct methods like Chrome Native Client!)