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THE VIDEO SHELF · bit flips and dns security

DEF CON 19 - Artem Dinaburg - Bit-squatting: DNS Hijacking Without Exploitation

Artem Dinaburg's DEF CON 19 talk on bit-squatting, where DRAM bit flips cause DNS requests to go to domains one bit off from the intended one. It shows how hardware faults can be exploited for hijacking without any software exploit.

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Why HN readers recommended it

Recommended as a fun, practical talk on why bit flips matter for security, and cited in ECC memory discussions.

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
bit flips and dns security
Format
talk
Level
intermediate
HN recommenders in dataset
2
HN mentions in dataset
5
Recommendation years in dataset
2018–2023

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.

  • A really fun DefCon talk on bitsquatting. Bitsquatting is the practice of registering domains that are one bit off from a popular one: [VIDEO] google.com vs ooogle.com >>> chr(int('0b1100111', 2)) 'g' >>> chr(int('0b1101111', 2)) 'o' If the 4th to last bit of 'g' were to …

    hayst4ck on Hacker News · 2022-09
    In iPhone app receives notification for another app

  • Regarding "some hardware errors": This might include operationg conditions you didn't consider; say: The divisor in your code went through a non-ECC DRAM module (maybe in a disk drive) that runs hotter than its specified operating temperature would allow and a random bit-flip changes your …

    btschaegg on Hacker News · 2018-08
    In 1/0 = 0

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

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