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CIRCLE WITH A DOT

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  3. I've been physically destroying several old hard drives and prepping a pile of old electronics for recycling.

I've been physically destroying several old hard drives and prepping a pile of old electronics for recycling.

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  • kkarhan@infosec.spaceK kkarhan@infosec.space

    @Nonya_Bidniss old HDDs are actually securely erasable, unlike SSDs where it's rather a "Trust me Bro!" kinda thing.

    n_dimension@infosec.exchangeN This user is from outside of this forum
    n_dimension@infosec.exchangeN This user is from outside of this forum
    n_dimension@infosec.exchange
    wrote last edited by
    #14

    @kkarhan @Nonya_Bidniss

    Old HDDs are not be securely erased unless you do it like US navy erased them.
    Dip them in acid 🍵
    Some drive tracks can be read on the "outside".
    By state actors mainly.

    However, both HDD and SSDs can be permanently erased in a microwave 😁

    zer0unplanned@friendica.rogueproject.orgZ 1 Reply Last reply
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    • n_dimension@infosec.exchangeN n_dimension@infosec.exchange

      @kkarhan @Nonya_Bidniss

      Old HDDs are not be securely erased unless you do it like US navy erased them.
      Dip them in acid 🍵
      Some drive tracks can be read on the "outside".
      By state actors mainly.

      However, both HDD and SSDs can be permanently erased in a microwave 😁

      zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
      zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
      zer0unplanned@friendica.rogueproject.org
      wrote last edited by
      #15
      @n_dimension @kkarhan @Nonya_Bidniss there are scripts that nuke the whole OS and Kernel and DD, just 1 script to run on the pc .
      Mr Robot used the chip for a microwave and pierced a hole in the HDD, in the movie whoami they used acid indeed with a mask on.
      But just 1 script and you can overwrite the hdd or SDD or/and nuke the whole OS> I wish them good luck with that recovering anything.
      kkarhan@infosec.spaceK n_dimension@infosec.exchangeN 2 Replies Last reply
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      • zer0unplanned@friendica.rogueproject.orgZ zer0unplanned@friendica.rogueproject.org
        @n_dimension @kkarhan @Nonya_Bidniss there are scripts that nuke the whole OS and Kernel and DD, just 1 script to run on the pc .
        Mr Robot used the chip for a microwave and pierced a hole in the HDD, in the movie whoami they used acid indeed with a mask on.
        But just 1 script and you can overwrite the hdd or SDD or/and nuke the whole OS> I wish them good luck with that recovering anything.
        kkarhan@infosec.spaceK This user is from outside of this forum
        kkarhan@infosec.spaceK This user is from outside of this forum
        kkarhan@infosec.space
        wrote last edited by
        #16

        @zer0unplanned @Nonya_Bidniss @n_dimension there are tools like shred that do the repeat overwrites with random data, 0s & 1s.

        • Just iterate over your physical drives and you should be good
          • That does work fine, and is kinda essential with shitty hosters [i.e. Hetzner] that tend to not even replace/delete the vHDD of their VPSes after customers cancel them.
        kkarhan@infosec.spaceK zer0unplanned@friendica.rogueproject.orgZ 2 Replies Last reply
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        • kkarhan@infosec.spaceK kkarhan@infosec.space

          @zer0unplanned @Nonya_Bidniss @n_dimension there are tools like shred that do the repeat overwrites with random data, 0s & 1s.

          • Just iterate over your physical drives and you should be good
            • That does work fine, and is kinda essential with shitty hosters [i.e. Hetzner] that tend to not even replace/delete the vHDD of their VPSes after customers cancel them.
          kkarhan@infosec.spaceK This user is from outside of this forum
          kkarhan@infosec.spaceK This user is from outside of this forum
          kkarhan@infosec.space
          wrote last edited by
          #17

          @zer0unplanned @Nonya_Bidniss @n_dimension OFC physically destroying the drives among dozens if not hundreds of identical ones with a physical shredder is also an option, but neither cheap nor fast.

          • But in many cases that is the mandated way to do things to ease off lawyers and in any decent organization CISO & CLO will approve of it if they didn't mandate it already…
          zer0unplanned@friendica.rogueproject.orgZ 1 Reply Last reply
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          • kkarhan@infosec.spaceK kkarhan@infosec.space

            @zer0unplanned @Nonya_Bidniss @n_dimension there are tools like shred that do the repeat overwrites with random data, 0s & 1s.

            • Just iterate over your physical drives and you should be good
              • That does work fine, and is kinda essential with shitty hosters [i.e. Hetzner] that tend to not even replace/delete the vHDD of their VPSes after customers cancel them.
            zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
            zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
            zer0unplanned@friendica.rogueproject.org
            wrote last edited by
            #18
            @kkarhan @n_dimension @Nonya_Bidniss Nice one!! 😃
            1 Reply Last reply
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            • kkarhan@infosec.spaceK kkarhan@infosec.space

              @zer0unplanned @Nonya_Bidniss @n_dimension OFC physically destroying the drives among dozens if not hundreds of identical ones with a physical shredder is also an option, but neither cheap nor fast.

              • But in many cases that is the mandated way to do things to ease off lawyers and in any decent organization CISO & CLO will approve of it if they didn't mandate it already…
              zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
              zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
              zer0unplanned@friendica.rogueproject.org
              wrote last edited by
              #19
              @kkarhan @n_dimension @Nonya_Bidniss No it is slow by design , I copied once the nuke OS of Kodachi OS which is Debian as the scripts are all viewable and copy pasta'able and made an usb with a universal script to nuke any machine once plugged in
              kkarhan@infosec.spaceK 1 Reply Last reply
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              • zer0unplanned@friendica.rogueproject.orgZ zer0unplanned@friendica.rogueproject.org
                @kkarhan @n_dimension @Nonya_Bidniss No it is slow by design , I copied once the nuke OS of Kodachi OS which is Debian as the scripts are all viewable and copy pasta'able and made an usb with a universal script to nuke any machine once plugged in
                kkarhan@infosec.spaceK This user is from outside of this forum
                kkarhan@infosec.spaceK This user is from outside of this forum
                kkarhan@infosec.space
                wrote last edited by
                #20

                @zer0unplanned @Nonya_Bidniss @n_dimension yeah, I do want to do something similar with @OS1337 but a bit more precise, aiming fir #LUKS headers first so it'll take literally seconds to make it already non-recoverable.

                zer0unplanned@friendica.rogueproject.orgZ 1 Reply Last reply
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                • kkarhan@infosec.spaceK kkarhan@infosec.space

                  @zer0unplanned @Nonya_Bidniss @n_dimension yeah, I do want to do something similar with @OS1337 but a bit more precise, aiming fir #LUKS headers first so it'll take literally seconds to make it already non-recoverable.

                  zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
                  zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
                  zer0unplanned@friendica.rogueproject.org
                  wrote last edited by
                  #21
                  @kkarhan @n_dimension @OS1337 @Nonya_Bidniss That is a harder nut, but if you realy want you can even beat up LUKS while I still ask why? that LUKS would be just a key to read overwritten data.
                  The aim is the data not the external defences.
                  kkarhan@infosec.spaceK 1 Reply Last reply
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                  • zer0unplanned@friendica.rogueproject.orgZ zer0unplanned@friendica.rogueproject.org
                    @kkarhan @n_dimension @OS1337 @Nonya_Bidniss That is a harder nut, but if you realy want you can even beat up LUKS while I still ask why? that LUKS would be just a key to read overwritten data.
                    The aim is the data not the external defences.
                    kkarhan@infosec.spaceK This user is from outside of this forum
                    kkarhan@infosec.spaceK This user is from outside of this forum
                    kkarhan@infosec.space
                    wrote last edited by
                    #22

                    @zer0unplanned @Nonya_Bidniss @n_dimension Mostly because deleting/overwriting the header first is extremely fast and twarts any unauthorized data recovery early on.

                    • This is a real security concern in #finance, where #ITsec literally has to deal with "Red Army Faction"-style hodtage taking scenarios as part of regulator-mandated #OpSec.
                      • Like "How can access of CxO's be revoked in K&R scenarios?" is a question @BaFin and others ask not just since #wirecard went "poof!"…

                    Just because a business doesn't have a shitton of cash at hand and banks neither doesn't mean that armed robbers would necessarily understand, much less accept.

                    • Similarly one may need to transit sensitive data but has to safeguard it against unauthorized access no matter the party accessing whilst providing plausible cooperation of it.
                      • Or not having the keys on the storage media entirely.
                    kkarhan@infosec.spaceK 1 Reply Last reply
                    0
                    • kkarhan@infosec.spaceK kkarhan@infosec.space

                      @zer0unplanned @Nonya_Bidniss @n_dimension Mostly because deleting/overwriting the header first is extremely fast and twarts any unauthorized data recovery early on.

                      • This is a real security concern in #finance, where #ITsec literally has to deal with "Red Army Faction"-style hodtage taking scenarios as part of regulator-mandated #OpSec.
                        • Like "How can access of CxO's be revoked in K&R scenarios?" is a question @BaFin and others ask not just since #wirecard went "poof!"…

                      Just because a business doesn't have a shitton of cash at hand and banks neither doesn't mean that armed robbers would necessarily understand, much less accept.

                      • Similarly one may need to transit sensitive data but has to safeguard it against unauthorized access no matter the party accessing whilst providing plausible cooperation of it.
                        • Or not having the keys on the storage media entirely.
                      kkarhan@infosec.spaceK This user is from outside of this forum
                      kkarhan@infosec.spaceK This user is from outside of this forum
                      kkarhan@infosec.space
                      wrote last edited by
                      #23

                      @zer0unplanned @Nonya_Bidniss @n_dimension Either way, comitting "#AssetDenial" is more often than not necessary and one may only have a few seconds before those exercising force may realize that a "duress code" was used and going for the #LUKS headers first may be the only feasible option in a short time...

                      zer0unplanned@friendica.rogueproject.orgZ 1 Reply Last reply
                      0
                      • kkarhan@infosec.spaceK kkarhan@infosec.space

                        @zer0unplanned @Nonya_Bidniss @n_dimension Either way, comitting "#AssetDenial" is more often than not necessary and one may only have a few seconds before those exercising force may realize that a "duress code" was used and going for the #LUKS headers first may be the only feasible option in a short time...

                        zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
                        zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
                        zer0unplanned@friendica.rogueproject.org
                        wrote last edited by
                        #24
                        @kkarhan @n_dimension @Nonya_Bidniss I'll try to do the same on an atomic image of fedora 43 as a pawn image in a box and will tell you if it worked with results. But need a 2nd fedora Atomic SilverBlue on that as a real challenge.
                        The years of me using Kali was very long ago just after backtrack, then I used Parrot OS rather but that all does not mater as it is all Debian RHEL
                        My os is immuatble with a rollback option> makes it very much trickier
                        1 Reply Last reply
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                        • zer0unplanned@friendica.rogueproject.orgZ zer0unplanned@friendica.rogueproject.org
                          @n_dimension @kkarhan @Nonya_Bidniss there are scripts that nuke the whole OS and Kernel and DD, just 1 script to run on the pc .
                          Mr Robot used the chip for a microwave and pierced a hole in the HDD, in the movie whoami they used acid indeed with a mask on.
                          But just 1 script and you can overwrite the hdd or SDD or/and nuke the whole OS> I wish them good luck with that recovering anything.
                          n_dimension@infosec.exchangeN This user is from outside of this forum
                          n_dimension@infosec.exchangeN This user is from outside of this forum
                          n_dimension@infosec.exchange
                          wrote last edited by
                          #25

                          @zer0unplanned @kkarhan @Nonya_Bidniss

                          Problem with SSD "overwrite" is SSDs balance the writes.
                          So if your file is in A D J, SSD MAY balance the write to B E K to balance the cells.

                          On the upside, SSD has one addressable cell, not a fuzzy magnetic dust.

                          zer0unplanned@friendica.rogueproject.orgZ 1 Reply Last reply
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                          • n_dimension@infosec.exchangeN n_dimension@infosec.exchange

                            @zer0unplanned @kkarhan @Nonya_Bidniss

                            Problem with SSD "overwrite" is SSDs balance the writes.
                            So if your file is in A D J, SSD MAY balance the write to B E K to balance the cells.

                            On the upside, SSD has one addressable cell, not a fuzzy magnetic dust.

                            zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
                            zer0unplanned@friendica.rogueproject.orgZ This user is from outside of this forum
                            zer0unplanned@friendica.rogueproject.org
                            wrote last edited by
                            #26
                            @n_dimension @kkarhan @Nonya_Bidniss So my HDD overwrite are useless on SSD?
                            1 Reply Last reply
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