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[liberationtech] Hacktivism PDF's

Griffin Boyce griffinboyce at
Wed Aug 8 10:14:45 PDT 2012

  This is also used to share (usually .jar) files on 4chan and other
imageboards.  It's highly insecure of course, but an option if you're
restricted by filetype for some reason.


On Wed, Aug 8, 2012 at 9:11 AM, dan jones <hack at> wrote:

> On 08/08/12 23:07, David Majlak wrote:
> >
> > I'd just like to add one cool thing they show you how to do in the
> > pack: Apparently al-qaeda was transmitting files via jpeg. You can zip
> > or rar a file, and combine them in the CMD prompt, and when you open
> > it, only the picture will open until you either separate the two, also
> > at the command prompt, or rename the file to .zip or .rar. Very cool.
> This is trivial to detect and retrieve the data if you have a copy of
> the original picture, which is likely if it is a picture already on the
> web. Don't use this for any sort of security.

"I believe that usability is a security concern; systems that do
not pay close attention to the human interaction factors involved
risk failing to provide security by failing to attract users."
~Len Sassaman

PGP Key etc:
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