The Privacy BlogPrivacy, Security, Cryptography, and Anonymity

May/12

25

Printers watermark your documents

It has long been known in security circles that many printers embed nearly invisible watermarks in all printed documents which uniquely identify the printer used.

SpringyLeaks reports that a recent FOIA request revealed the names of printer companies who embed such markings and have worked with law enforcement to identify the printers used in various cases.

The article also suggest that these watermarks can be used to aid reconstruction of shredded documents.

· · · · ·

3 comments

  • A Nonnymouse · August 14, 2012 at 3:24 pm

    Typo in Title:
    “Printer’s” is possessive while “printers” is plural.

    Reply

    • Author comment by lance · August 17, 2012 at 6:04 am

      DOH!

      Reply

  • tom · March 31, 2015 at 5:04 am

    I beleive if your employer pretends that you were reprimanded they can easily fake a document of you and just put a date and backtrack it and a forensic will know the date it was made and you can vindicate yourself from a false reprimand

    Reply

Leave a Reply

<<

>>