From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] avoid keyloggers: enter password with mouse?(virtual?keyboard)
Date: Wed, 30 Nov 2011 15:46:47 +0100 [thread overview]
Message-ID: <20111130144647.GA4918@tansi.org> (raw)
In-Reply-To: <CAL1L0DFuNZn4JjxNk9srL-4eYD6+x793HH+jPkOC2-pFhf=BSg@mail.gmail.com>
On Wed, Nov 30, 2011 at 03:22:50PM +0100, Ma Begaj wrote:
> 2011/10/4 Heinz Diehl <htd@fancy-poultry.org>:
> > On 04.10.2011, Jan wrote:
> >
> >> You have a fully encrypted system on your USB stick like privatix
> >> (see http://www.mandalka.name/privatix/index.html.en ) and you are
> >> sitting in an internet cafe. There's a hardware keylogger installed
> >> on that the PC you use. You lose your USB stick, maybe you even
> >> forget it in the internet cafe (this happens)!
> > [.....]
> >
> > Privacy on a machine outside of your control is a no-go.
> > There are by far more options to get access to your data if
> > somebody other than yourself has admin/root access to the machine
> > you're using. A simple script which does a copy of anything inserted
> > will do it. Or the admin himself logged in from another machine, and
> > many more...
>
>
> that is not true. two factor authorization solves this problem pretty easy.
It seems to until you look more closely. Current attacks
on online-banking demonstrate the attack. The only way around
that is basically to delegate all interaction to a device
the attacker did not have access to. Everything else just
increases attackert effort, but is still feasible.
> I am using barada on my machines for SSH and it is working pretty great.
> http://barada.sourceforge.net/
What has "working well" to do with "being secure"? Not a lot, I
would say. If the machine you do this one has been pepared
to hijack ssh-sessions, it can easily look over all your stuff
without you ever knowing and install a backdoor on the machine
you logged in to. This is a practical attack, even if it causes
some effort on the attacker's side.
Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
If it's in the news, don't worry about it. The very definition of
"news" is "something that hardly ever happens." -- Bruce Schneier
next prev parent reply other threads:[~2011-11-30 14:46 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-12 15:10 [dm-crypt] avoid keyloggers: enter password with mouse (virtual keyboard) Olivier Sessink
2010-04-12 17:15 ` Arno Wagner
2010-04-12 17:58 ` Heinz Diehl
2010-04-13 15:48 ` Arno Wagner
2010-04-13 19:38 ` Heinz Diehl
2010-04-13 19:55 ` Milan Broz
2010-04-14 13:11 ` Olivier Sessink
2010-04-14 15:30 ` Arno Wagner
2010-04-14 18:42 ` Olivier Sessink
2010-04-14 23:30 ` Arno Wagner
2010-04-14 23:54 ` Sven Eschenberg
2010-04-15 6:24 ` Milan Broz
2010-04-15 10:00 ` Arno Wagner
2010-04-15 7:50 ` test532
2010-04-15 10:04 ` Arno Wagner
2010-04-15 17:44 ` Richard Zidlicky
2010-04-15 18:04 ` [dm-crypt] avoid keyloggers: enter password with mouse(virtual keyboard) Vladimir Giszpenc
2011-10-04 15:02 ` [dm-crypt] avoid keyloggers: enter password with mouse (virtual keyboard) Jan
2011-10-04 18:28 ` [dm-crypt] avoid keyloggers: enter password with mouse?(virtual?keyboard) Arno Wagner
2011-10-04 21:42 ` Jan
2011-10-04 22:48 ` Arno Wagner
2011-10-05 9:37 ` Jan
2011-10-05 12:15 ` Arno Wagner
2011-10-05 18:18 ` Jan
2011-10-04 18:48 ` Heinz Diehl
2011-11-30 14:22 ` Ma Begaj
2011-11-30 14:28 ` Ma Begaj
2011-11-30 14:46 ` Arno Wagner [this message]
2011-11-30 15:11 ` Ma Begaj
2010-04-12 21:43 ` [dm-crypt] avoid keyloggers: enter password with mouse (virtual keyboard) Olivier Sessink
2010-04-12 17:51 ` Richard Zidlicky
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