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Re: How to Test HDD Encryption
From: jfvanmeter () comcast net
Date: Thu, 15 Nov 2007 11:22:14 +0000

The problem I have with pre-boot is patch management, if you push a patch to a workstation that need to reboot, you 
have to wait for someone to log into the pre-boot for the installation to finish. I know some of the FDE you can 
define, a number of times that you don't need to have a pre-boot so you can push a patch, the workstation can reboot 
and the patch gets applied.

I'm in the process of deploying FDE to 40k workstations/laptops, in addation to support the file base encryption . I 
believe the two plus restrict ACLs on the files will add extract layers of security to protection the NPPI/PII data for 
my client.  

Most of the testing that I've worked on is from a penetration/vulnerability assessment. I don't believe I've cound any 
real one tool to test FDE that I know of. If anyone knows of a good tool, or selection of tools that would be create to 

Take Care and Have Fun --John
 -------------- Original message ----------------------
From: "Samir Pawaskar" <infosecofficer () gmail com>
I am using FDE with Pre Boot Logon and a password access to BIOS.


On 11/13/07, jfvanmeter () comcast net <jfvanmeter () comcast net> wrote:

Hello Samir, you should sign up to the Full Disk Encryption  mail list @

Here is my two shiny centavos on Full Disk Encryption,

I believe it protects the data when its at rest, but once the OS is
mounted then all bets are off because the OS is now handling access to any
file. So you would need some type of file encryption software like PGP or

If you don't use a pre-boot log on, if I have access to the laptop  I
could boot to an alternative OS, reset the administrators password, reboot,
log in as the administrator and have full access to the files.

Again this is just my two shiny centavos --John

-------------- Original message ----------------------
From: infosecofficer () gmail com

How can we ascertain that the encryption software we have selected is
doing its

A small test like removing the hdd of an encrypted laptop and attaching
it as an
external drive on another laptop shows the drive as unformatted. So far

But is there any tool available to demonstrate to the management that
even the
professionals cannot break in even if they lay their hands on the drive

I am basically trying to make a case to push for drive encryption in our

Please group suggest something.....

Best Regards


--- Begin Message --- From: "Samir Pawaskar" <infosecofficer () gmail com>
Date: Thu, 15 Nov 2007 05:34:51 +0000

--- End Message ---

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