[Cisspstudy] Shon Harris Physical Security Questions pt3

[Andrea Gatta]

Just let me add another one. What should be the difference between an
electronic combination lock and a cipher lock (pag. 451 AIO).

As far as I can see both of them have a keypad but the second is referred to
programmable.

Any idea ?

Andrea

On Mon, Sep 28, 2009 at 11:10 PM, Holland, Brandon <hollandb at frmaint.com>wrote:

>  Last email of the day…
>
> In the same chapter 6, Physical Security, I’m reading about locks again
> and noticed (while trying to get a visual on the different types of locks)
> on Wikipedia it says
>
> A Wafer tumbler lock is NOT the same as a disc tumbler lock.
>
> *http://en.wikipedia.org/wiki/Wafer_tumbler_lock*<http://en.wikipedia.org/wiki/Wafer_tumbler_lock>
>
> *http://en.wikipedia.org/wiki/Disc_tumbler_lock*<http://en.wikipedia.org/wiki/Disc_tumbler_lock>
>
> Although, both descriptions denote that people often incorrectly refer to a
> wafer tumbler as a disc tumbler in regions where actual “disc tumbler”locks are rare
> … it still leaves a begging question as their relative security seems to
> be on opposite spectrums.
>
> What makes it confusing to me is a wafer tumbler lock is a relatively low
> security lock compared to a pin tumbler lock, but a disc tumbler lock
> appears to be a “high security” lock that’s hard to pick according to
> Wikipedia.  (Now whether that’s considered higher security than pin
> tumbler is another question)
>
> So my question is, if I get a question about the strength of a disc tumbler
> lock to a pin tumbler lock, to which definition should I adhere for the
> test?
>
> I’m actually getting serious about this test now and will start picking it
> apart hoping to better understand as I’ve set a date to take the test on
> Oct. 25th.
>
> Thanks for your help,
>
> Brandon Holland
>
> Army Fleet Support
>
> ITS | Network Services
>
> Ph:  598-0626
>
>
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