David Kriesel: Don't trust any scan you didn't fake yourself

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media.ccc.de

Published on Jan 1, 2015
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http://media.ccc.de/browse/congress/2... Copiers that spontaneously change numbers in the document: In August 2013, it was discovered that almost all Xerox scan copiers simply replace numbers and letters with others when scanning. Since such errors are almost impossible for users to see, the bug is extremely dangerous and remained undiscovered for a long time: It has existed in the wild for over eight years. #DavidKriesel #6558 Help us caption & translate this video! http://amara.org/v/FuF3/ 0:00 Introduction 3:15 2008: Conspiracy theories about Obama's nationality 4:14 2011: Publication of the "Long Form Birth Certificate" 4:42 2011: LFBC - signs of forgery 6:40 July 24, 2013: Scan of a construction plan 8:20 July 24, 2013: Construction plan 11:44 July 24, 2013: Cost register 12:40 July 24, 2013: Self-generated numbers 15:03 Anyone who relies on support is left behind 16:15 August: Article online (bilingual) 17:03 to August 3: First impacts on tech blogs 18:16 August evening: Worldwide in the tech portals 20:03 August: Impact in mass media 23:41 Image compression: test image 24:44 Image compression: sections of the test image 25:15 Image compression: GIF (here with 16 colors) 27:34 Image compression: JBig2, text compressed 27:45 Image compression: JBig2, both compressed 32:17 August, morning 3 days after impact: Signs of life from Xerox! 38:46 August 6th, afternoon 40:51 August: Humorous 43:26 August: Xerox announces patch 48:53 August 9th: Number swaps on defaults. 50:00 August: Number swaps in all three modes 50:21 August: Bug confirmed 50:55 August 22nd: Patches released 53:09 Previous “Lessons learned 53:21 Epilogue - Barack Obama's birth certificate

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