Re: [gentoo-user] "wiping" unused space and/or secure erasing of files/ Is this irrelevent?

2005-10-31 Thread Rob
Matthias Bethke wrote: > Hi Hemmann,, > on Sunday, 2005-10-30 at 19:05:20, you wrote: > >>>Oh, no doubt that they can recover from burned platters. >>>But have you ever seen, that they can recover overwritten >>>data? >> >>not seen, but read about it. They can recover overwritten data. > > > May

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-31 Thread Octavio Ruiz (Ta^3)
Alexander Skwar, who happens to be smarter than you, thinks: > Dale schrieb: > > > Those forensics folks sure are good though. I have heard they can get > > it back even after you have wrote alternating 1's and 0's to the drive a > > dozen times. > > Where have you heard that? I don't think they

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-31 Thread Matthias Bethke
Hi Hemmann,, on Sunday, 2005-10-30 at 19:05:20, you wrote: > > Oh, no doubt that they can recover from burned platters. > > But have you ever seen, that they can recover overwritten > > data? > > not seen, but read about it. They can recover overwritten data. Maybe those overwritten once with a s

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Glenn Enright
On Mon, 31 Oct 2005 15:57, Glenn Enright wrote: > On Mon, 31 Oct 2005 01:33, Mike Williams wrote: > > On Sunday 30 October 2005 09:08, Uwe Thiem wrote: > > > With the right hardware, forensics are *far* beyond this. > > > > The NSA *crush* old hardware. > > You ever seen a car crushed? Complete car

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Glenn Enright
On Mon, 31 Oct 2005 01:33, Mike Williams wrote: > On Sunday 30 October 2005 09:08, Uwe Thiem wrote: > > With the right hardware, forensics are *far* beyond this. > > The NSA *crush* old hardware. > You ever seen a car crushed? Complete car, engine, drive train, interior, > wheels, everything, crush

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Dale
It was a true story. It really hapened. Maybe you have just not watched the show before? Most of the shows I watch are real. I don't care much for fake stuff like Star Wars. They did it whether you believe it or not. Dale -- gentoo-user@gentoo.org mailing list

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Benno Schulenberg
Stroller wrote: > I've just tried `shred` on a file in a ResierFS partition and it > certainly appears to work. $ man shred >file $ ls -l file -rw-r--r-- 1 ben users 3685 Oct 31 00:11 file $ shred file $ ls -l file -rw-r--r-- 1 ben users 131072 Oct 31 00:11 file Hmm, would that mean that the "b

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Alexander Skwar
Qian Qiao schrieb: > On 10/30/05, Alexander Skwar <[EMAIL PROTECTED]> wrote: >> Well, but how does it work in a DBMS? Does a transaction >> log there save you from a 'DELETE FROM table; COMMIT;'? >> I mean, I suppose you could see - thanks to the transaction >> log - that a 'DELETE FROM table;' wa

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Hemmann, Volker Armin
On Sunday 30 October 2005 17:26, Alexander Skwar wrote: > Oh, no doubt that they can recover from burned platters. > But have you ever seen, that they can recover overwritten > data? not seen, but read about it. They can recover overwritten data. > > I've only heard the opposite - that they CANN

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Qian Qiao
On 10/30/05, Alexander Skwar <[EMAIL PROTECTED]> wrote: > Qian Qiao schrieb: > > > Ah, I see. I was thinking that the journal is working in a similar > > fashion as the transaction logs in DBMS, seems I'm quite wrong. :) > > Well, but how does it work in a DBMS? Does a transaction > log there save

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Stroller
I've just tried `shred` on a file in a ResierFS partition and it certainly appears to work. `shred` is part of sys-apps/coreutils so there should already be a manpage on your system if you're interested in this utility. Stroller. On Oct 30, 2005, at 4:17 am, Dale wrote: It may also be of n

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Alexander Skwar
Qian Qiao schrieb: > Ah, I see. I was thinking that the journal is working in a similar > fashion as the transaction logs in DBMS, seems I'm quite wrong. :) Well, but how does it work in a DBMS? Does a transaction log there save you from a 'DELETE FROM table; COMMIT;'? I mean, I suppose you could

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Qian Qiao
On 10/30/05, Alexander Skwar <[EMAIL PROTECTED]> wrote: > Qian Qiao schrieb: > > On 10/30/05, Alexander Skwar <[EMAIL PROTECTED]> wrote: > > >> dd if=/dev/zero of=file && rm file > > > > I'm a noob on journaling file systems, won't the file be recovered if > > the journal is re-played? When we eras

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Alexander Skwar
Qian Qiao schrieb: > On 10/30/05, Alexander Skwar <[EMAIL PROTECTED]> wrote: >> dd if=/dev/zero of=file && rm file > > I'm a noob on journaling file systems, won't the file be recovered if > the journal is re-played? When we erase a file like that, don't we > have to figure out a way to erase the

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Alexander Skwar
Mike Williams schrieb: > On Sunday 30 October 2005 04:17, Dale wrote: >> Those forensics folks sure are good though. I have heard they can get >> it back even after you have wrote alternating 1's and 0's to the drive a >> dozen times. I wonder how they do that? > > Magnetic remnants. Any RECENT

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Alexander Skwar
Dale schrieb: > Scroll down, I'm bottom feeding now. LOL What's so funny about you being unable to properly quote? Is it funny, because you make it hard to read what you wrote on purpose? > I saw that on one of those forensic shows. Those on TV? Those commercials turned into a report? > They

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Mike Williams
On Sunday 30 October 2005 09:08, Uwe Thiem wrote: > With the right hardware, forensics are *far* beyond this. The NSA *crush* old hardware. You ever seen a car crushed? Complete car, engine, drive train, interior, wheels, everything, crushed into a cube less than a meter cubed. I'd use one of th

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Mike Williams
On Sunday 30 October 2005 04:17, Dale wrote: > Those forensics folks sure are good though.  I have heard they can get > it back even after you have wrote alternating 1's and 0's to the drive a > dozen times.  I wonder how they do that? Magnetic remnants. I don't imagine there would be a whole lot

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Dale
Scroll down, I'm bottom feeding now.  LOL Alexander Skwar wrote: Dale schrieb: Those forensics folks sure are good though. I have heard they can get it back even after you have wrote alternating 1's and 0's to the drive a dozen times. Where have you heard that? I don'

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Qian Qiao
On 10/30/05, Alexander Skwar <[EMAIL PROTECTED]> wrote: > Rob schrieb: > > > Is there a gentoo port that does this kind of stuff? > > dd if=/dev/zero of=file && rm file I'm a noob on journaling file systems, won't the file be recovered if the journal is re-played? When we erase a file like that, d

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Alexander Skwar
Dale schrieb: > Those forensics folks sure are good though. I have heard they can get > it back even after you have wrote alternating 1's and 0's to the drive a > dozen times. Where have you heard that? I don't think they can do that. > I wonder how they do that? Me too. > > Dale > > P.S.

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Alexander Skwar
Rob schrieb: > Is there a gentoo port that does this kind of stuff? dd if=/dev/zero of=file && rm file Alexander Skwar -- gentoo-user@gentoo.org mailing list

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-30 Thread Uwe Thiem
On 30 October 2005 06:05, Glenn Enright wrote: > On Sun, 30 Oct 2005 14:42, Hemmann, Volker Armin wrote: > > app-misc/secure-delete > > > > Description: Secure file/disk/swap/memory erasure utilities > > Just out of interest, I understand ext3 is pretty good at eliminating old > data during delet

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-29 Thread Dale
It may also be of note that if you use reiserfs, you're out of luck.  I emerge secure-delete and it does not work on reiserfs.  I'm not usre about ext3 but it does journal so it may not work or may not work well. Those forensics folks sure are good though.  I have heard they can get it back ev

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-29 Thread Glenn Enright
On Sun, 30 Oct 2005 14:42, Hemmann, Volker Armin wrote: > app-misc/secure-delete > > Description: Secure file/disk/swap/memory erasure utilities > Just out of interest, I understand ext3 is pretty good at eliminating old data during delete, because the data structure is so abstract? So in this

Re: [gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-29 Thread Hemmann, Volker Armin
On Sunday 30 October 2005 02:05, Rob wrote: > I noticed the "rm" command doesn't have any options for secure erasing > of files. Maybe I saw that before on one of the BSD's. I am also > interested in "wiping" unused disk space. > > Is there a gentoo port that does this kind of stuff? > > Thanks, >

[gentoo-user] "wiping" unused space and/or secure erasing of files

2005-10-29 Thread Rob
I noticed the "rm" command doesn't have any options for secure erasing of files. Maybe I saw that before on one of the BSD's. I am also interested in "wiping" unused disk space. Is there a gentoo port that does this kind of stuff? Thanks, Rob. -- gentoo-user@gentoo.org mailing list