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Recommend a Secure Delete apps for Windows 7, if Free, better

We have Windows 7 and are doing some clean up.  We found some files that we want deleted but want to delete by Secure Delete.  We have Ccleaner and has an option for this feature but it for entire Disks.

We need an apps that can secure delete a specific file(s).

Please advice
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rayluvs
Asked:
rayluvs
6 Solutions
 
d3ath5tarCommented:
If you are looking a bin the entore Hard drive then you can use cipher.exe within windows....
http://www.windowsecurity.com/articles/Using-cipherexe.html
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Giovanni HewardCommented:
SDelete - Secure Delete v1.51
Copyright (C) 1999-2005 Mark Russinovich
Sysinternals - www.sysinternals.com

usage: sdelete [-p passes] [-s] [-q] <file or directory>
       sdelete [-p passes] [-z|-c] [drive letter]
   -c         Zero free space (good for virtual disk optimization)
   -p passes  Specifies number of overwrite passes (default is 1)
   -q         Don't print errors (Quiet)
   -s         Recurse subdirectories
   -z         Clean free space

example: sdelete -p 16 test.txt
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rayluvsAuthor Commented:
I'm not on my pc... does those apps can do secure delete to specific files?
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PapertripCommented:
SDelete - Secure Delete v1.51
Copyright (C) 1999-2005 Mark Russinovich
Sysinternals - www.sysinternals.com

usage: sdelete [-p passes] [-s] [-q] <file or directory>
example: sdelete -p 16 test.txt
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madunixChief Information Security Officer Commented:
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Giovanni HewardCommented:
@Ramante... Yes, SDELETE will securely erase a single file...

 
sdelete -p 16 test.txt

Open in new window

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rayluvsAuthor Commented:
Thanx.  Based on your expierence whish tool presented here is the more secure?  or do they all use the same security scheme?
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Giovanni HewardCommented:
A good general rule is you want to perform at least a Standard DoD 5220.22-Mclearing and sanitizing standard wipe.  In relation to secure erasing one of the most secure methods would be the Peter Gutmann method.

Active@ ERASER has several methods for data destruction that conform to:
US Department of Defense clearing and sanitizing standard DoD 5220.22-M
German VSITR
Russian GOST p50739-95.
More sophisticated methods like Gutmann's or User Defined methods are available as well.

Of course proper physical destruction would be the "most secure" method available.  If you want to be thorough, try a complete purge (entire drive (occupied, free space, etc.) using the Gutmann method and then physical destruction (pulverize + incinerate/disintegrate).

Here is the NIST Guidelines for Media Sanitization
Recommendations of the National Institute of Standards and Technology

http://csrc.nist.gov/publications/nistpubs/800-88/NISTSP800-88_rev1.pdf

Table 5-1. Sanitization Methods
Clear
Overwrite media by using agency-approved and validated overwriting technologies/methods/tools.

Purge
1. Purge using Secure Erase. The Secure Erase software can be download from the University of California, San Diego (UCSD) CMRR site.
2. Purge hard disk drives by either purging the hard disk drive in an NSA/CSS-approved automatic degausser or by disassembling the hard disk drive and purging the enclosed platters with an NSA/CSS-approved degaussing wand.***
3. Purge media by using agency-approved and validated purge technologies/tools.

**Degaussing any current generation hard disk will render the drive permanently unusable.

Physical Destruction
Disintegrate.
Shred.
Pulverize.
Incinerate. Incinerate hard disk drives by burning the hard disk drives in a licensed incinerator
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rayluvsAuthor Commented:
We've never used these types of apps; it's a first for us.  So we're kind of cautious of how to proceed.
   
Three last question:

   1.  Do these apps also secure-delete or over write unused disk space?

   2.  If so, wow save is it?

   3.  On the 4 apps recommended (cipher, SDelete, Active@ERASER, Eraser), which 2 apps
        would be easy to use and also have a good secure scheme?
     
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Giovanni HewardCommented:
1. Yes
2. DoD 5220.22-M or Gutmann is considered "Safe"
3. SDelete (DoD 5220.22-M (default)) and Active@ ERASER (DoD 5220.22-M or Gutmann method)

You have sufficient information to proceed.
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rayluvsAuthor Commented:
Thank you very much!
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rayluvsAuthor Commented:
Thanx
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