Following Winner's arrest and subsequent charging, the security researcher has submitted a pull request to the PDF Redact Tools, a project for securely redacting and stripping metadata from documents before publishing.
[...] "The black and white conversion will convert colors like the faded yellow dots to white," Szathmari told Bleeping Computer in an interview.
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(Score: 0) by Anonymous Coward on Sunday June 11 2017, @01:12AM (1 child)
What about adding more dots? Patterns all over the place? Or is firmware smart enough to detect fake data and avoid that so only the ID dots are printed?
Also, yellow paper? Maybe tint everything with quick spray pass. Or colored slide and photocopy the combination.
(Score: 2) by kaszz on Sunday June 11 2017, @01:49AM
It can be counter acted by statistical trends. Yellow paper etc will still carry a small but detectable difference, and thus being compromised. It has to not be printed at all to begin with.