4f4e9508_scanned_documents___D__Kriesel__What_happened
[Date] August 2 [What happened] 
The blog post goes around the planet. From now on, I get emails of people being able to replicate the “bug” around the world, as well as informations that JBIG2 compression can cause this. I update this blog post a lot.
Xerox scanners/photocopiers randomly alter numbers in scanned documents · D. Kriesel
What happened