Yet again mosaic blur's inferiority to opaque rectangle is demonstrated.
The person who fulfilled my request sent me a PDF copy of their full customer list, where all entries had been blacked out except mine.
As you may anticipate, that blacking out was simply a black box drawn on top of the actual data. It took me all of 3 seconds to select all, copy, then paste in a word processor to confirm that the file contained personal data from hundreds of other individuals.
That’s when a redaction tool suddenly appeared in Adobe Acrobat.
My best guess is that, having seen blurring of faces (which is arguably OK when one merely wants to avoid casual attempts at identification, while retaining a ‘natural’ look), they assumed this was the proper way to do it in all cases.
Unfortunately, part of "leaving the visual interest behind" is precisely "pixels that depend on their real underlying values"....
I once read a gov document that opaque squared the pronouns, but it was clearly about a she/her!
That is my one insight. Take it for what it's worth.
So when they unblur it to hack you they find a rude messages instead of the actual text.
[edit] here is a link: https://www.youtube.com/watch?v=cDss3BfsITs [/edit]
I previously replied to the wrong comment on accident.