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THE VIDEO SHELF · x86 hardware backdoors

DEF CON 26 - Christopher Domas - GOD MODE UNLOCKED Hardware Backdoors in redacted x86

Christopher Domas presents research at DEF CON 26 showing a hidden alternate instruction set and undocumented hardware backdoor in some x86 processors, found on a third-party CPU. He uses it to ask how feasible wider hardware backdoors are.

Why HN readers recommended it

HN regulars treat Domas as a favorite hacker and bring this talk up in any discussion of CPU backdoors, hidden instruction sets or processor security.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel
DEFCONConference
Topic
x86 hardware backdoors
Format
talk
Level
advanced
HN recommenders in dataset
4
HN mentions in dataset
10
Recommendation years in dataset
2019–2026

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

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

    daniel-thompson on Hacker News · 2021-08
    In Compiling C Programs Into “Mov” Instructions (And Only “Mov” Instructions)
  • I cannot wait for the accompanying Black Hat talk. Christopher Domas is one of my absolute favorite all-time hackers. He does such a fantastic job of explaining his work. Some of my favorite talks of his: - Psychological Warfare in Reverse Engineering [LINK] - The …

    MattSteelblade on Hacker News · 2026-08
    In Spaghettifying DRAM
  • This guy now works for intel: DEF CON 26 - Christopher Domas - GOD MODE UNLOCKED Hardware Backdoors in redacted x86 [VIDEO] This is one of many amazing videos this guy did before they hired him.

    not1ofU on Hacker News · 2021-12
    In Intel updates mysterious ‘software-defined silicon’ code in the Linux kernel

Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.