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DEF CON 26 - Christopher Domas - The Ring 0 Facade Awakening the Processors Inner Demons

DEFCONConference · 23.9K views · 2018-10-22 · 21:28

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Overview

Christopher Domas's DEF CON 26 talk on secret processor registers that vendors reserve for third parties holding trusted keys. He examines how users are locked out of parts of their own CPUs.

On Hacker News

HN commenters call his x86 internals talks spectacular and mention them whenever low-level processor surprises come up.

Recommended by 2 HN people across 2 months · HN mentions 2019–2026

Topics

Security & hackingComputer architecture & CPUs
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x86hardware securitycpu registersreverse engineeringdef con

What people said

aecsocket · 2026-08 · Strong recommendation

Holy shit, Christopher Domas is back. I remember watching his Defcon talks on x86 shenanigans[^1][^2] and being amazed at what he's been able to discover. Then he got whisked away by Intel and now drops this. I'm excited. [^1]: [VIDEO] [^2]: [LINK]

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daniel-thompson · 2021-08 · Strong recommendation

These links don't work for me, but the videos are on YT: - [LINK] - [VIDEO] And yes, they are spectacular.

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kbenson · 2019-06 · Reference

While somewhat interesting, I'm not sure there's much to discuss unless the presentation or details are already available. Interestingly, this reminds me of two Defcon talks I watched in the last day or two, which also cover vulnerability through additional processors onboard.[1][2] 1: [LINK] 2: [VIDEO]

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Sources

Video by DEFCONConference, played through YouTube.

Data and selection notes

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