Secure deletion on the ext3 filesystem

All Gurus once were Newbies
Forum rules
There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section.
Before you post please read this

Secure deletion on the ext3 filesystem

Postby Bobo-the-Cat on Mon Mar 16, 2009 7:00 am

I understand that it may not be possible to securely delete a file from the ext3 filesystem, because the filesystem is journalled. I have read somewhere that it may depend on the options used when the filesystem is mounted , i.e those in fstab. I have looked at this file and Linux Mint does not appear to be using the "journalled" option. Is there a Mint technical expert that could definitely confirm what the situation is here?

What I want to be able to do is to ensure that if I delete a file, say using the "wipe -fri" command which overwrites the file 35 times, that this file can NEVER be recovered. If there is jornalling - can this switched off or reset if it would allow the file to be recovered?
Bobo-the-Cat
Level 2
Level 2
 
Posts: 55
Joined: Tue Jun 03, 2008 1:03 pm

Linux Mint is funded by ads and donations.
 

Re: Secure deletion on the ext3 filesystem

Postby grimdestripador on Tue Mar 17, 2009 6:06 pm

Yes there is journalizing. And yes your document may be swapped and later retreived.

The secure option is to mount a TrueCrypt container file and use that as your secure HD. You could then format it ext2 to prevent journalizing.
User avatar
grimdestripador
Level 6
Level 6
 
Posts: 1069
Joined: Fri Feb 16, 2007 2:26 am


Return to Newbie Questions

Who is online

Users browsing this forum: austin.texas, cgs1025, Neil Edmond, Reorx, special_k_423 and 34 guests