Are CPU backdoors possible? What would one look like? http://danluu.com/cpu-backdoors/
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@danluu There's a lot of room for backdoors on x86 wrt "ignored" inst prefixes. Probably microcodable, but can't coerce a JIT to generate.
@_rsc Yeah, I thought about mentioning that (should have, probably), but didn't since it would be hard to microcode patch in without
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@_rsc a huge performance penalty. Or so I suspect. Depends on what the decoder exposes to microcode.Thanks. Twitter will use this to make your timeline better. UndoUndo
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