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Bleach Bit – How to securely delete your files on Windows 7 or Linux

26/06/2014

Windows cannot delete files – that’s how forensics teams can retrieve the data.  Bruce Schneier used Bleach bit when handling the Snowden documents.  Bleach bit has both a Windows and Linux version.

http://bleachbit.sourceforge.net/

Download

bleach downloadSelect OS

bleach bit os

 Bleach Bit Installer

bleach installer

Install > English > OK > I Agree

bleach 1

Default Configuration > Next

bleach 2

Default Directory Folder

bleach 3Install will run > Next > Finish

That’s it.

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Bleach Bit OPENS

Tick the box for the item to be deleted

bleach open

Select Adobe Reader

Clean

 

bleach adobe

Delete – Confirm

bleach delete*****

Edit > Preferences

Tick > Download from Community (winapp2.ini)

bleach pref

Many more applications will be listed

Tick and Clean

 

bleach after prefs

http://www.winapp2.com/Winapp2.ini

Make sure you spend the time to wipe the free space on your drive.  It’s slow but critical.  As files are copied from email to your recycle bin, additional copies are being made.  Therefore make sure you securely delete the recycle bin.

These settings are under “system”.

recycle bin

 

http://bleachbit.sourceforge.net/documentation/shred-files-wipe-disk

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Bleach Bit – Linux Video

http://www.youtube.com/watch?v=BWPtTKxj7Kg

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SANS discussion on the limitations of multiple wipes of a drive

https://uwnthesis.wordpress.com/2013/01/06/fallacy-that-forensics-can-recover-data-from-a-wiped-drive/

http://digital-forensics.sans.org/blog/2009/01/15/overwriting-hard-drive-data/

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How to configure Ccleaner to wipe cluster tips

https://uwnthesis.wordpress.com/2013/07/10/ccleaner-how-to-configure-ccleaner-to-wipe-cluster-tips-on-drive/

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