Wednesday, June 7, 2017

Yellow Printer Dots Nail Spy Agency Leaker

‘Colour printers spy on you’: Barely visible yellow dots lead to arrest of Reality Winner, alleged NSA leaker.

According to Rob Graham, who writes for the blog Errata Security, the Intercept’s scanned images of the intelligence report contained tracking dots – small, barely visible yellow dots that show “exactly when and where documents, any document, is printed.” Nearly all modern color printers feature such tracking markers, which are used to identify a printer’s serial number and the date and time a page was printed. 

“Because the NSA logs all printing jobs on its printers, it can use this to match up precisely who printed the document,” Graham wrote. more

Long term readers of the Security Scrapbook already knew about this.
From 10 years ago... Is Your Printer Spying on You? Good!