Security Basics mailing list archives
Re: Secure delete files
From: Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net>
Date: Sat, 26 May 2007 10:53:33 +0200
On 2007-05-25 Adam Pal wrote:
If you have such sensitive data that you need so much accuracy in deleting it, dont misunderstand me but all i can recommend you is to burn the data media, so that nothing remains. I say that because i`ve seen software which claimed to be military-safe in deleting data, by rewrite with about 20 sequences of 0 and 1 and i also read different comments about restoring data where it was claimed that you need about 200 or more sequences to be partialy safe.
That's superstition. I would like to see at least one case where software has recovered data that was overwritten (even in a single pass with zeroes). Sure, when you wipe only files that may leave other options to recover data from them (rolocated blocks on harddisk, temp files, swap, ...), but that's a different story. Regards Ansgar Wiechers -- "All vulnerabilities deserve a public fear period prior to patches becoming available." --Jason Coombs on Bugtraq
Current thread:
- Secure delete files Jax Lion (May 25)
- Re: Secure delete files Stephen Thornber (May 25)
- Re: Secure delete files Adam Pal (May 25)
- Re: Secure delete files Ansgar -59cobalt- Wiechers (May 31)
- Re: Secure delete files Kim Guldberg (May 25)
- Re: Secure delete files raimarm (May 25)
- Re: Secure delete files Ansgar -59cobalt- Wiechers (May 25)
- Re: Secure delete files Kurt Buff (May 25)
- <Possible follow-ups>
- Re: Secure delete files visitnikhil (May 25)
- Re: Secure delete files Yudi Rosen (May 31)
- Re: Secure delete files Ryan Chow (May 31)