Does it really delete when you delete?

earthling

Well-known member
  • Jun 15, 2006
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    Clerk_Kent said:
    Shredder softwares thiyanawa permanantly del karanna data...
    But takes a lot of time...:rolleyes:

    Yup.. There are applications that encrypt the data when you delete them so that even if they were recovered cant be read because of the encryption...

    I've tried one bt it takes a hell of a long time to encrypt a 700 MB file when you try to do it this way..
     

    Clerk_Kent

    Well-known member
  • Jan 17, 2008
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    x-pert

    Member
    Jun 13, 2006
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    Clerk_Kent said:
    Shredder softwares thiyanawa permanantly del karanna data...
    But takes a lot of time...:rolleyes:

    Not 100% correct machang.

    Shredder softwares commonly use DOD 5220.22-M and Gutmann Algorithm to do that.

    It doesn't delete the file permenantly.

    Mama issella kiyuwa wage file ekak normaly delete karahama wenne eekata thiyana pointer eka delete wenawa. And eh memory eka aayith use karanna puluwan kiyala OS ekata kiyanawa.

    But eeta passe ehema memory ekak udin over write kalahama recover karanna baha lesiyen. But Government agencies like CIA, FBI have their techniques like Magnetic Force microscopic processes and image analysis to read the old data which is overwritten by some other data.

    Onna ohoma karana eka nawaththanna thamai DOD 5220.22-M and Gutmann Algorithms thiyenne. Gutmann algo eken file eka uda 35 paarak over write karanawa using another sophisticated encryption method.

    So godak hard parana data hoyana eka.

    But widi naththema naha aayith recover karanna. Mokada oya okkoma algos use karanne symmetric crypto keys. ;)
     

    x-pert

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    Nash_Node said:
    I am not into TECHY side of PC's

    BUT, there was a case study which I read sometimes back (about 4 years back) about Military data theft in the Pentagon.

    When the culprit was caught, he punctured the Hard Drive and apparently BROKEN it to 8 pieces.

    To prove that this guy was the criminal, the Pentagon and some "unknown" company made a software called "anadisk" (not sure whether the software name is correct)

    They actually "GLUED" the pieces of the Hard drive with Metal bond and recovered COMPLETE data :shocked:

    hehe AnaDisk is a Floppy Diskette Analysis tool originally from BAE Systems....

    You can't 'Glue' Hard drives like that :rofl: That's hillarious stuff :lol:

    http://www.forensics-intl.com/anadisk.html
     

    Clerk_Kent

    Well-known member
  • Jan 17, 2008
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    x-pert said:
    Not 100% correct machang.

    Shredder softwares commonly use DOD 5220.22-M and Gutmann Algorithm to do that.

    It doesn't delete the file permenantly.

    Mama issella kiyuwa wage file ekak normaly delete karahama wenne eekata thiyana pointer eka delete wenawa. And eh memory eka aayith use karanna puluwan kiyala OS ekata kiyanawa.

    But eeta passe ehema memory ekak udin over write kalahama recover karanna baha lesiyen. But Government agencies like CIA, FBI have their techniques like Magnetic Force microscopic processes and image analysis to read the old data which is overwritten by some other data.

    Onna ohoma karana eka nawaththanna thamai DOD 5220.22-M and Gutmann Algorithms thiyenne. Gutmann algo eken file eka uda 35 paarak over write karanawa using another sophisticated encryption method.

    So godak hard parana data hoyana eka.

    But widi naththema naha aayith recover karanna. Mokada oya okkoma algos use karanne symmetric crypto keys. ;)

    Ahun ne:rofl:
     

    x-pert

    Member
    Jun 13, 2006
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    Clerk_Kent said:

    Not 100% correct machang.

    Shredder softwares commonly use DOD 5220.22-M and Gutmann Algorithm to do that.

    It doesn't delete the file permenantly.

    Mama issella kiyuwa wage file ekak normaly delete karahama wenne eekata thiyana pointer eka delete wenawa. And eh memory eka aayith use karanna puluwan kiyala OS ekata kiyanawa.

    But eeta passe ehema memory ekak udin over write kalahama recover karanna baha lesiyen. But Government agencies like CIA, FBI have their techniques like Magnetic Force microscopic processes and image analysis to read the old data which is overwritten by some other data.

    Onna ohoma karana eka nawaththanna thamai DOD 5220.22-M and Gutmann Algorithms thiyenne. Gutmann algo eken file eka uda 35 paarak over write karanawa using another sophisticated encryption method.

    So godak hard parana data hoyana eka.

    But widi naththema naha aayith recover karanna. Mokada oya okkoma algos use karanne symmetric crypto keys. ;)

    :P :P
     

    Clerk_Kent

    Well-known member
  • Jan 17, 2008
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    x-pert said:
    Not 100% correct machang.

    Shredder softwares commonly use DOD 5220.22-M and Gutmann Algorithm to do that.

    It doesn't delete the file permenantly.

    Mama issella kiyuwa wage file ekak normaly delete karahama wenne eekata thiyana pointer eka delete wenawa. And eh memory eka aayith use karanna puluwan kiyala OS ekata kiyanawa.

    But eeta passe ehema memory ekak udin over write kalahama recover karanna baha lesiyen. But Government agencies like CIA, FBI have their techniques like Magnetic Force microscopic processes and image analysis to read the old data which is overwritten by some other data.

    Onna ohoma karana eka nawaththanna thamai DOD 5220.22-M and Gutmann Algorithms thiyenne. Gutmann algo eken file eka uda 35 paarak over write karanawa using another sophisticated encryption method.

    So godak hard parana data hoyana eka.

    But widi naththema naha aayith recover karanna. Mokada oya okkoma algos use karanne symmetric crypto keys. ;)

    :P :P

    :rolleyes::rolleyes:den nam ahuna wage:rolleyes:
    reta kemath one ne den nam:rofl:
     

    earthling

    Well-known member
  • Jun 15, 2006
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    x-pert said:
    Not 100% correct machang.

    Onna ohoma karana eka nawaththanna thamai DOD 5220.22-M and Gutmann Algorithms thiyenne. Gutmann algo eken file eka uda 35 paarak over write karanawa using another sophisticated encryption method.

    exactly..the One I used also used the above 2 methods..it asked what do u want to use ?..bt it takes avery long time to encrypt data..

    not recommended on 500mb+ files.. its torture..
     

    x-pert

    Member
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    earthling said:
    exactly..the One I used also used the above 2 methods..it asked what do u want to use ?..bt it takes avery long time to encrypt data..

    not recommended on 500mb+ files.. its torture..

    Ya.. :) And it's not worth that much of a hassle as well machang...

    I mean, we are not the Pentagon or US Defence ne :rofl:
     

    ASMAnuradha

    Junior member
  • Jan 12, 2008
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    thm14 said:
    So, Don't u knw a way to Delete the stuff Permanently..??

    macho , softwares thiyenawa , evata kiyanne "wiping softwares " kiyala

    menna wiping software ekak

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