iWipe questions

Discussion in 'iOS Jailbreak & Cydia' started by iBricked, Sep 26, 2010.

  1. iBricked

    iBricked Well-Known Member

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    I have a few questions about iWipe.

    1.Does it delete all my info or just the remains of my deleted stuff

    2.Will this delete my contacts which have not been deleted?

    3.Is it safe on ios4

    4.Does it have a possibility of destpying all my info?
  2. iRa1n

    iRa1n Banned

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    seems i was wrong.
  3. Ezekeel

    Ezekeel New Member

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    Well, not really. It just marks the sectors which were occupied by the deleted files before as free - it does not overwrite any sectors. The next time something is written to disk there is a chance that this new data ends up being written into those 'deleted' sectors - however until this actually happens the former data can always be restored. This is the reason why for a proper secure wipe you first delete the contents of a disk and then fill up the entire disk with random garbage, preferably several times.
  4. iRa1n

    iRa1n Banned

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    Oh ok, so if you use iWipe, and then restore would your ipod be quicker
  5. Ezekeel

    Ezekeel New Member

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    No. It does not affect speed. It just ensures that the data you have deleted is overwritten properly and cannot be recovered that easily. So, if you want to sell your iPod to some NSA guy, you could restore and run iWipe to make sure he cannot recover your porn. Be aware that this additional overwriting for security purposes of course puts additional stress on the NAND, so you should not do that on a regular basis.

    iWipe btw is also a sh*tty program for this since afaik it only overwrites with zeros. If you are really paranoid you want to make a pass with zero, then a pass with random data, then with zeros, rinse and repeat. And iWipe is also non-free if I remember correctly. You could do it for free from terminal or SSH with 'dd if=/dev/zero of=output' for zeros and 'dd if=urandom of=output' where 'output' is a file like '/var/mobile/bla.dat' when you want to clean the free space on the user partition (you have to delete the file afterward) or the partition '/dev/disk0s2s1' if you want to clean the entire user partition including all apps, music, movies, etc. You will need to be logged in as root. If you are confused and do not know what I talk about, better not try it.
  6. bmueller63

    bmueller63 New Member

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    I use a tool called secure wipe. It overwrites the flash with random data.

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