On Sat, 2 May 2015, Jason White <jason@jasonjgw.net> wrote:
Morrie Wyatt <morrie@morrie.id.au> wrote:
(Not that I'm saying that snail mail is free from risk either, but a letter can be dropped in a post box anywhere, so the chance of being exposed is minimal, or at least can be minimised by taking the fairly simple precautions of using generic stationary, print the content using standard fonts on a common model of printer, and random choice of post box to send the letter on its way.)
Some printers, unfortunately, embed subtle identifying information in their output.
https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking- dots http://en.wikipedia.org/wiki/Printer_steganography The above has more information on this.
Use a printer that is frequented by members of the public in large numbers, for example in a public library or perhaps a printing/photographics outlet that people regularly visit to print material.
Or just obtain a printer without it being associated to you or to any other secret documents. For example if you were to find a working printer on someone's lawn when the council is collecting hard rubbish and only used it for blowing the whistle on one organisation you would be safe as long as there is no geographic association. Taking a printer from your neighbor would be a bad idea. Taking one from a different suburb that's no closer to you than to any of the other people who have access to the data in question should be OK. You could buy a printer with cash at a swap meet. Buying from a store would be a bad idea as you don't know how long their surveillance records are kept. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/