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THE VIDEO SHELF · scanner compression bugs

David Kriesel: Traue keinem Scan, den du nicht selbst gefälscht hast

David Kriesel's 31C3 talk, in German, on the discovery that Xerox scanner-copiers silently replace digits and letters in scanned documents. He explains how the bug stayed unnoticed in the wild for years.

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Why HN readers recommended it

Called a classic CCC talk, and the Xerox bug is cited as a cautionary tale about trusting scans and digitized archives.

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

Video & recommendation details

Creator / channel
media.ccc.de
Topic
scanner compression bugs
Format
talk
Level
general
HN recommenders in dataset
4
HN mentions in dataset
9
Recommendation years in dataset
2019–2025

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.

  • I would also highly recommend "Traue keinem Scan, den du nicht selbst gefälscht hast" [0] but I just noticed that there are no english subtitles available. [0] [VIDEO] (2015)

    snicksnak on Hacker News · 2020-12
    In RC3 talk: How to survive in spacecraft [video]

  • (2013). The whole ordeal lead to a quite legendary presentation by David at CCC (german, no captions, live translation available but pretty bad): [VIDEO] If you speak german and haven’t seen this yet, watch it, this is a classic. His talks are all entertaining and …

    solarkraft on Hacker News · 2021-11
    In Confused Xerox copiers rewrite scanned documents, expert finds (2013)

  • Epic talk (in German, David Kriesel, "Traue keinem Scan, den du nicht selbst gefälscht hast"): [VIDEO]

    masswerk on Hacker News · 2022-12
    In Enhance Speech from Adobe – Free AI filter for cleaning up spoken audio

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