check it out. i tested it. it's a handy thing. I'm unsure if it would pass DoD standards, but as far as securely deleting your sensitive stuff, here you go:
if it will shred files 7 times then i should pass DoD standerds. since one of the services offered by my buissness is sensitive data distruction so i am farmilor with the DoD snadards.
if it will shred files 7 times then i should pass DoD standerds. since one of the services offered by my buissness is sensitive data distruction so i am farmilor with the DoD snadards.
chris
really? seven overwrites is all it takes? i guess it'll pass then. it can be configured to run from 3 (the default) up t0 10 passes on the file. each pass overwrites the file with 1's, 0's, or random data, then the file is truncated to a zero byte file and deleted.
seemed to be a common question, and i couldn't find any file shredders for the ppc out there....which seemed odd to me. and the price is right :)
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i had to fix an interface error, which was causing a functional error in the application. one of those tiny details i overlooked. it's fixed now. if you've already downloaded it, please download it again. my bad.
went and got ahead of myself a bit.
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Edit a 8k+ textfile and delete, say the half of the text and save it again.
Then schred and look with a hex editor and you will find readable, residual information.
So, if you're going to sell your ax (heaven forbid :-) and want to make sure no vital information is left, then you MUST overwrite ALL of the memory.
really? seven overwrites is all it takes? i guess it'll pass then. it can be configured to run from 3 (the default) up t0 10 passes on the file. each pass overwrites the file with 1's, 0's, or random data, then the file is truncated to a zero byte file and deleted.
seemed to be a common question, and i couldn't find any file shredders for the ppc out there....which seemed odd to me. and the price is right :)
yup. just seven passes (altough just to be safe i write my clients data over 30 times then i fragment the drive then i format it to ext3 then to fat16 then i zero the drive and finally format it to NTFS.
Edit a 8k+ textfile and delete, say the half of the text and save it again.
Then schred and look with a hex editor and you will find readable, residual information.
So, if you're going to sell your ax (heaven forbid :-) and want to make sure no vital information is left, then you MUST overwrite ALL of the memory.
Just my 2€ :-)
i can understnad how that would occur, yes, as the file shortens, leaving the tail end of the file data. the file pointers then change to indicate the new start and end of the file.
this is by no means a 100% guaranteed safe way of removing data. even the DoD recognizes such...when the spy plane went down in china, the pilots were found by the chinese beating on the hard drives with hammers. the only true way to destroy all data is destroy the media. And i believe i recently saw a movie or documentary where they actually put shredded documents back together, strip by strip.
This is, however, a safe way of eliminating a file from an sd card or cf card. most people when using files tend to add to them, especially in the case of financials, rather than remove half the file. it's a simple but effective little shredder. like most modern computer security, it prevents the average skilled user from recovering enough data to be of use to them.
you're point is valid. but truthfully, if you're carrying around information that is that sensitive on a handheld device that could be misplaced or swiped easily enough, you're putting it in the wrong place. the safest place for pin numbers, credit card numbers, and passwords is inside your own head. cardinal rule of security: never write anything down you don't want someone else to see.
now in the case of selling a handheld and wanting someone else to not see what was on it, , shred anything on the sd /cf cards. then format them. hard reset the device, and call it good. If you suspect the person buying it from you is that morally bankrupt, don't sell it to them :)
so i see your 2€ and raise you 2 ;)
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i dk if this is in effect for flash memory, but what about the cluster tips? will your software erse those too?
chris
no. this is exactly how it works:
for each overwrite, it opens the file, writes to the end of the file with whichever overwrite method its using, and closes the file.
when it's finished all the passes, it again opens the file for a truncation operation, truncates it to byte 0, then closes the file.
it then deletes the 0 byte file.
it's not complex by any means. but it will prevent someone picking up a misplaced card, popping it in a PC with a card reader, and running file recovery tools to get useful information back. At this point i'm unsure of how to remove the cluster tips in flash memory without damaging the media or making more of a mess. and since i test all my own software on my own (out of warranty) axim, i wouldn't want to kill anything ;)
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I used to work in a IT department.
When I retired I had to return my x50 to my boss :-(
I knew it would be used by some of my very skilled colleges.
I didn't worry about my crypto files, but had some very personal txt and email files stored.
So I reinstalled the system ROM, made some BIG scratch files and performed a hard reset.
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