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 Post subject: hard disk /data folders secure eraser tools
PostPosted: December 26th, 2018, 10:29 
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Joined: January 12th, 2016, 3:46
Posts: 136
Location: India
Hi friends
I am looking for a professional tool for my data sanitizing requirements. I have various hardware based tools as well as lots of softwares which works on device level (erase entire disk) , another disadvantage of this method is no reporting is there.
I have tested most of the so called DoD 5220.22-M tools as well as I am aware of latest update to DoD ( NIST SP 800-88 Rev1 guidelines)
Somehow I am not satisfied with these breed. Some vendors are charging exorbitantly ( blancco /Jetico etc)
I am keen to know if any more efficient software is there which I am not aware of.
My basic requirement is ---
1) It should support various eraser methods - one pass zero etc.
2) It should log process with device details (model / sn , start sector , end sector , start time end time and output of process). Active killdisk has some of the features but again it erases entire disk not individual files /folders etc.
3) If it allows to make live USB using winPE / any other OS that will be good.
4) It should give all available erasing options --- 1) files /folders 2) partitions 3) Entire disk 4)Dynamic disks and any other formats.
Thank you.


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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 2nd, 2019, 8:53 
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Joined: June 19th, 2018, 4:52
Posts: 44
Location: United Kingdom
If you do not spend serious money here you won't get such a solution.

1. Only way to guarantee a full data destruction is a degauser.
2. There are areas, software can't access and overwrite. You would need MRT or PC3000 to access that.
3. Software won't work on anything that is flash based tech.


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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 2nd, 2019, 10:39 
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Joined: January 12th, 2016, 3:46
Posts: 136
Location: India
Hi nicoalbrecht
I do not agree with you. I think using pc3000 for disk eraser is only good if client is paying $ 500 per eraser otherwise its like using a AK47 machine gun to kill a mosquito . Ina typical enterprise customer there could 10000+ hdds erasing them with pc3000 will take ages. Instead with dedicated hardware /software one can erase no. of disks at a time. One can even use ATA commands (secure erase) .
There is no guarantee that whether disk is properly erased by degauser as there is no process log to confirm the same.
I think and as per US NIST SP 800-88 rev 1 one pass overwrite is more than enough to erase hard disk beyond recovery for most of the business level.
Recovery from remapped sector / overwritten track is not possible on commercial level and is important to CIA and pentagon only .For average users single pass overwrite ( zero fill ) is more than enough. (see attached pic)


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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 2nd, 2019, 14:43 
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Joined: December 19th, 2006, 8:49
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Location: Portugal
Just use security erase and make sure that the process do indeed erase the data !!!

http://www.hddoracle.com/viewtopic.php?f=56&t=1412

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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 16th, 2019, 2:33 
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Joined: January 12th, 2016, 3:46
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Location: India
Hi Spildit
Thanks a lot for the valuable information. :good:


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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 16th, 2019, 18:31 
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No problem !

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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 16th, 2019, 18:36 
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Joined: June 11th, 2013, 17:01
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Personally I use this one. It gives you lots of options for the types of erase and generates certificates if needed. It does work with Windows 10.
https://www.prosofteng.com/mediatoolswipe-disk-wipe/

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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 16th, 2019, 20:42 
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Joined: June 16th, 2018, 12:09
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Location: Turkey
Is it possible to get data back if I make low level format with windows?
I have tried before. It's filling zero. Any way to recover it ?

Or
If I fully write a random files (ex: videos ) over the my data , all to hdd capacity
Who can get back again old data? ?
Write random files over old datas from 0 gb to the end of hdd capacity.
And format it? . Easy . Who can get back ex data after then?

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 Post subject: Re: hard disk /data folders secure eraser tools
PostPosted: January 17th, 2019, 9:09 
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HddDonorMarket wrote:
Is it possible to get data back if I make low level format with windows?
I have tried before. It's filling zero. Any way to recover it ?

Or
If I fully write a random files (ex: videos ) over the my data , all to hdd capacity
Who can get back again old data? ?
Write random files over old datas from 0 gb to the end of hdd capacity.
And format it? . Easy . Who can get back ex data after then?


This would work.

Pauli exclusion principle states that two identical fermions (particles with half-integer spin) cannot occupy the same quantum state simultaneously.

Meaning 2 things can't be at the exact same space at the exact same time.

You can not have a sector with old data if you re-write new data over it.

Use ATA terminal and try. Use command ATA standard to read LBA 0, now get the data from the buffer when the drive reports DRQ. Replace that data with another sector of data, use the write command, send that sector to the buffer when the drive reports DRQ. Now read the same LBA. What will you get newer data or older data ? :D :D :D

There are exceptions like drive can replace some LBAs with spares and old data will be on original sectors while newer data will be on spares. Check G-List. If it's empty you should be ok....

Also drive can store "hidden" data in logs like on the Host Log ....

There are chances for some data to "survive" a zero fill, or a re-write .... but it wouldn't be that much data and it would most likely be random data unless you have some spyware/malware that stores specific data like passwords to a host log on the HDD ....

Read :

http://www.hddoracle.com/viewtopic.php?f=56&t=2487

Also :

http://www.hddoracle.com/viewtopic.php?f=56&t=1412

:D

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