On 2007-09-13 Steve Olive wrote:
> On Wed, 5 Sep 2007 04:03:17 am Ansgar -59cobalt- Wiechers wrote:
>> On 2007-09-01 gjgowey_at_tmo.blackberry.net wrote:
>>> A since pass with all zero's really won't protect your data from
>>> being recovered by more advanced data recovery software let alone
>>> alone hardware.
>>
>> I'd like to see a single case where someone was able to recover data
>> from an overwritten harddisk, even after a single pass with zeroes.
>>
>>> Multiple passes isn't much better, but if that's all you got...
>>>
>>> You would be better off looking at better utilities if you really
>>> need to keep the data from being recovered.
>>
>> Nonsense. If you're worried about the zeroes just replace /dev/zero
>> with /dev/urandom. Your "better utilites" don't work any different
>> from that.
>
> I'd say it is very possible, otherwise organisations would not be
> offering these services, with "No Fix, No Fee Policies", at confirmed
> prices. There are a number of testimonials from existing customers:
>
> http://www.payam.com.au/hard-disk-data-recovery.htm
>
> If this is possible in Australia, I'm sure that the rest of the world
> has access to similar organisations ;-)
You're mistaken. Of course recovery is perfectly possible for data that
was just deleted. However, we are talking about data that was not just
deleted, but overwritten with zeroes or random data. That's a totally
different story.
Regards
Ansgar Wiechers
--
"All vulnerabilities deserve a public fear period prior to patches
becoming available."
--Jason Coombs on Bugtraq
Received on Sep 13 2007
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