overwrite demonstration

The point of physical destruction of classified media is you know that it is 'gone'.
You eliminate operator error, software glitches, remapped sectors etc.

When I was working for the Feds we physically destroyed old drives by removing the platters. CDs and DVDs were run through specialized shredders. From time to time, if there were a lot of drives they would go to an automobile shredder.

Sure D , using sledgy© currents have proved to be a safe method, also for non-magnetic media wink
http//reboot.pro/13601/page__st__150#entry123099

jaclaz

The point of physical destruction of classified media is you know that it is 'gone'.
You eliminate operator error, software glitches, remapped sectors etc.

When I was working for the Feds we physically destroyed old drives by removing the platters. CDs and DVDs were run through specialized shredders. From time to time, if there were a lot of drives they would go to an automobile shredder.

Sure D , using sledgy© currents have proved to be a safe method, also for non-magnetic media wink
http//reboot.pro/13601/page__st__150#entry123099

jaclaz

ROFL…

I think the managers would have complained about the noise!

I saw a drive crusher once at a security conference. It drilled holes through the drive and then literally folded the thing in half. By the time it was finished the drive looked like it had been run over by a tank.

I saw a drive crusher once at a security conference. It drilled holes through the drive and then literally folded the thing in half. By the time it was finished the drive looked like it had been run over by a tank.

Notwithstanding the fact that shredding a drive to pieces each smaller than 1cm3 is "safer", I guess that something as simple as this (example)
http//diskcrusher.com/edrcrusher.html
should guarantee a "sufficient" level of unrecoverability roll and operation should be also "silent enough".

Conversely, it takes no more than 5 minutes and a set of screwdrivers to open a hard disk, and once you have the platters in your hands it is rather easy to break them, so, for small quantities it makes no sense to have even one of these "portable" thingies.

jaclaz

A bit of background from some time ago - might be of interest (it was old info when I posted it in 2001).

http//lists.jammed.com/forensics/2001/10/0032.html

A bit of background from some time ago - might be of interest (it was old info when I posted it in 2001).

http//lists.jammed.com/forensics/2001/10/0032.html

And some more details you gave here
http//www.forensicfocus.com/Forums/viewtopic/t=2065/postdays=0/postorder=asc/start=17/

This is a post I made to a newsgroup in 2001 re a project I had been working on (off and on) from 1994 to about 1998.

The project was shelved due to budgetary contraints but we (I) did recover data from a 650MB drive (big in those days). With more modern drives where servos mean that there is no slack in the system as they are self tracking and the areal density is such that magnetic domains are packed so tightly I think that these techniques really dont stand up. And with even more latterly perpendicular recording its all a little bit of pie in the sky.

If I were to securely delete some of my own personal data - one pass with zeroes would have me sleeping soundly.

For NO apparent reason 😯 a nice animation about perpendicular recording
http//www1.hgst.com/hdd/research/recording_head/pr/PerpendicularAnimation.html

jaclaz

For NO apparent reason 😯 a nice animation about perpendicular recording
http//www1.hgst.com/hdd/research/recording_head/pr/PerpendicularAnimation.html

jaclaz

Jesus, is that real or did I just dream it in some sort of crazy fever-dream.

For NO apparent reason 😯 a nice animation about perpendicular recording
http//www1.hgst.com/hdd/research/recording_head/pr/PerpendicularAnimation.html

jaclaz

Haha! Fabulous! By far the best disco-based animation explanation of perpendicular recording I've seen to date.

D

Haha! Fabulous! By far the best disco-based animation explanation of perpendicular recording I've seen to date.

D

Which obviously prompts for the following question wink

How MANY "disco-based animation explanation of perpendicular recording" have you actually "seen to date"? roll

Somehow I feel that "best among the full amount of 1" is somewhat less appreciative than what sounded the cited sentence….

jaclaz

I wonder . . . Is hgst.com an authoritative site?

Could . . . the video be submitted to opposing counsel for their educational purposes?

mrgreen

I wonder . . . Is hgst.com an authoritative site?

You must be joking 😯 , they actually DESIGN and MANUFACTURE the actual hard disks.

They SURELY know what they are doing! roll

….or maybe not…. wink
http//en.wikipedia.org/wiki/Hitachi_Deskstar

jaclaz