AOA Forums AOA Forums AOA Forums Folding For Team 45 AOA Files Home Front Page Become an AOA Subscriber! UserCP Calendar Memberlist FAQ Search Forum Home


Go Back   AOA Forums > Software > Data Security

Data Security Viruses, Firewalls and Safe computing


Reply
 
LinkBack Thread Tools Rate Thread
  #1 (permalink)  
Old 18th June, 2012, 06:31 PM
danrok's Avatar
AOA Staff
 
Join Date: March 2003
Location: Great Britain
Posts: 18,916

Personal data put at risk by auction of unclaimed USB drives

RailCorp sold lost drives with owner's personal data still recoverable, see front page:
http://www.aoaforums.com/frontpage/c...sb-drives.html

Comments?
__________________
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #2 (permalink)  
Old 18th June, 2012, 10:33 PM
Chief Systems Administrator
 
Join Date: September 2001
Location: Europe
Posts: 13,075

The only problem with the story that I can see was that the USB drives were already lost. The fact is that there was easily accessible personal data on them before RailCorp picked them up. Perhaps the original owners of the USB drives should have used crypto?
__________________
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3 (permalink)  
Old 18th June, 2012, 11:46 PM
Daniel ~'s Avatar
Chief BBS Administrator
 
Join Date: September 2001
Location: Seattle Wa.
Posts: 45,605

"Not economically feasible"

The good we've turned away from with those words...
__________________
"Though all men live in ignorance before mystery,
they need not live in darkness...
Justice is foundation and Mercy ETERNAL
."
DKE

"All that we do is touched by Ocean
Yet we remain on the shore of what we know."
Richard Wilbur

[img]/forum/attachments/random-nonsense/16515-sigs-dan_drag.jpg[/img]
Subscribers! Ask Pitch about a Custom Sig Graphic

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #4 (permalink)  
Old 19th June, 2012, 10:31 AM
Chief Systems Administrator
 
Join Date: September 2001
Location: Europe
Posts: 13,075

It's actually surprisingly difficult to destroy all the information on a flash drive. You see, the controller has to pull all sorts of tricks to make flash actually usable as a drive, and it's those tricks that make it hard.

"Not economically feasible" in this case just means that it'd cost more to ensure the USB drives were erased than they'd get back selling them.
__________________
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #5 (permalink)  
Old 20th June, 2012, 06:19 AM
Daniel ~'s Avatar
Chief BBS Administrator
 
Join Date: September 2001
Location: Seattle Wa.
Posts: 45,605

Doesn't seem like one method would be just as labor intensive as another?
__________________
"Though all men live in ignorance before mystery,
they need not live in darkness...
Justice is foundation and Mercy ETERNAL
."
DKE

"All that we do is touched by Ocean
Yet we remain on the shore of what we know."
Richard Wilbur

[img]/forum/attachments/random-nonsense/16515-sigs-dan_drag.jpg[/img]
Subscribers! Ask Pitch about a Custom Sig Graphic

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #6 (permalink)  
Old 20th June, 2012, 09:40 AM
Chief Systems Administrator
 
Join Date: September 2001
Location: Europe
Posts: 13,075

The fun with flash drives is that there's more flash memory on board than the capacity of the drive. Flash is a little touchy about erases, so the controller will move blocks around so that the flash is "worn" evenly. Think of it as a bit like rotating the tyres on your car, including the spare.

Hence, if you overwrite every sector of the flash drive, it's still got the spare, and there's still data in it.
__________________
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #7 (permalink)  
Old 20th June, 2012, 08:31 PM
Daniel ~'s Avatar
Chief BBS Administrator
 
Join Date: September 2001
Location: Seattle Wa.
Posts: 45,605

And the spare (Swap?) portion of the drive is more inaccessible?
__________________
"Though all men live in ignorance before mystery,
they need not live in darkness...
Justice is foundation and Mercy ETERNAL
."
DKE

"All that we do is touched by Ocean
Yet we remain on the shore of what we know."
Richard Wilbur

[img]/forum/attachments/random-nonsense/16515-sigs-dan_drag.jpg[/img]
Subscribers! Ask Pitch about a Custom Sig Graphic

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #8 (permalink)  
Old 20th June, 2012, 09:38 PM
Gizmo's Avatar
Chief BBS Administrator
BassTeroids Champion, Global Player Champion, Aim & Fire Champion, Puzzle Maniax Champion, Othello Champion, Canyon Glider Champion, Unicycle Challenge Champion, YetiSports 9: Final Spit Champion, Zed Champion
 
Join Date: May 2003
Location: Webb City, Mo
Posts: 16,178
Send a message via ICQ to Gizmo Send a message via AIM to Gizmo Send a message via MSN to Gizmo Send a message via Yahoo to Gizmo Send a message via Skype™ to Gizmo

The 'extra' portions of the drive are 'shadow' storage.

Think of it this way: You have a restaurant that can serve 2 customers at a time. You can never let your customers sit with an empty plate, or without a plate at all for more than a second, because that's the level of service you guarantee. You can't bring the kitchen to both tables (impractical from a resource-usage standpoint), so your only choice is to prepare the food in the kitchen and bring it to the table, but you can't do that in the one second that you have to provde the service within.

Your best option is to have extra plates. Howe many extra plates is a function of how many customers you plan to serve at one time, and how long it takes to prepare and deliver the food to the customers.

How do you guarantee that ALL of the plates are clean, given that you ALWAYS have to have 2 of the plates in front of the customers?
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #9 (permalink)  
Old 20th June, 2012, 10:10 PM
Daniel ~'s Avatar
Chief BBS Administrator
 
Join Date: September 2001
Location: Seattle Wa.
Posts: 45,605

Make them lick their plates!
or
hire a very fast dishwasher

I like the first option... it has a symmetry about it....
__________________
"Though all men live in ignorance before mystery,
they need not live in darkness...
Justice is foundation and Mercy ETERNAL
."
DKE

"All that we do is touched by Ocean
Yet we remain on the shore of what we know."
Richard Wilbur

[img]/forum/attachments/random-nonsense/16515-sigs-dan_drag.jpg[/img]
Subscribers! Ask Pitch about a Custom Sig Graphic

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Tags
australia , usb drive



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Customers Sue Countrywide Financial Over Theft And Sale Of Personal Data Daniel ~ Data Security 0 12th April, 2010 07:24 PM
Solid-State Drives Will Not Replace Hard Disk Drives – Apple Co-Founder. Daniel ~ General Hardware Discussion 1 18th October, 2009 07:29 PM
Personal data for 650,000 customers vanishes into thin air danrok Random Nonsense! 5 22nd January, 2008 09:09 PM
Store personal data with live bacteria. Gizmo Random Nonsense! 12 28th February, 2007 05:42 PM
EP-8HMMi-A 'veryfying DMI Pool DATA' with SATA drives tripitaka EPoX MotherBoards 2 29th June, 2005 05:00 PM


All times are GMT +1. The time now is 03:48 PM.


Copyright ©2001 - 2010, AOA Forums
Don't Click Here Don't Click Here Either

Search Engine Friendly URLs by vBSEO 3.3.0