Another CCleaner Question...

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  1. Posts : 509
    Windows10 Home 64 bit v. 21H1 bld. 19043.1620
       #1

    Another CCleaner Question...


    Last weekís CCleaner thread prompted another question, but I didnít want to hijack that thread (again). Iíve used CCleaner for years across multiple versions of Windows to clean up after various browsers. Other functions Iíve used it is for the Secure Delete and the Free Space Wipe features. Normally, I have CCleaner set for 3 times overwrite. I may be a bit paranoid, but I am wondering what others think about usefulness of the overwrite function.
      My Computer


  2. Posts : 4,552
    Windows 11 Pro 64-bit
       #2

    You are stressing HDD the life lifespan shortens each time you overwrite sectors on HDD.

    With this batch script you can add Secure Delete to context menu option in Windows 10.
    Another CCleaner Question... Attached Files
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  3. Posts : 25,076
    10 Home x64 (21H2) (10 Pro on 2nd pc)
       #3

    jamis said:
    Other functions I’ve used it is for the Secure Delete and the Free Space Wipe features. Normally, I have CCleaner set for 3 times overwrite. I may be a bit paranoid, but I am wondering what others think about usefulness of the overwrite function.
    You are being paranoid. Once is enough to destroy all but the CIA's chances of forensic recovery

    As Freebooter says, you are shortening the life of an HDD, and it would be even more stressful for an SSD (basically, never use it on SSDs). Use a Secure Erase tool from the SSD manufacturer.


    The only practical use I've made of CCleaner's secure delete is to write zeros to all unused sectors of a usb flash drive before making an image of it. A string of zeros compress remarkably well in a .zip file, or with ntfs compression as with this image of a usb.

    Another CCleaner Question...-image.png
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  4. Posts : 25,689
    Windows 11 Pro 22621.169
       #4

    I use CCleaner Pro on a daily basis without any problems. When I want to use a Secure Delete I take the Drive out into the drive and use a sledge hammer on it.
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  5. Posts : 7,257
    Windows 10 Pro 64-bit
       #5

    I think daily is a bit much, I tend to do it once a week.

    Regarding @jamis question, I dont see why you would need to wipe it at all if it's staying in your house. Of course if you want to sell it then I think just one pass is enough.
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  6. Posts : 25,689
    Windows 11 Pro 22621.169
       #6

    swarfega said:
    I think daily is a bit much, I tend to do it once a week.

    Regarding @jamis question, I dont see why you would need to wipe it at all if it's staying in your house. Of course if you want to sell it then I think just one pass is enough.
    Every time I close Firefox it cleans what I have it set to clean. I also run it before a MR Image. No need to back up junk.
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  7. Posts : 7,257
    Windows 10 Pro 64-bit
       #7

    I agree with you about backing up junk. But I dont back up browser info anyway, I rely on the browser's own sync.
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  8. Posts : 5,209
    21H1 64 Bit Home
       #8

    RE: Wipe free space (Ccleaner)

    It takes way too long. If you don't use the 35 passes it may still be possible to recover deleted files. Test using Recuvva.

    Download Recuva | Recover deleted files, free!

    Beware of 'Wipe Free Space' - CCleaner Discussion - CCleaner Community Forums

    Plus if you cancel the wipe it leaves a huge amount of data in a file that you will have to manually delete:

    Can I Cancel Wipe Free Space? - CCleaner Discussion - CCleaner Community Forums

    SDelete is way faster and only needs one pass. See Posts #2 &#3 in this thread:

    Using Eraser or SDelete - Windows 7 Help Forums

    However I no longer use this method on my SSD.

    RE: Not bothering with secure delete or wipe free space. Well i suppose it doesn't matter except for sensitive documents or files. If anyone gets access to your machine (including hackers) they can recover your deleted files.

    I remember once finding evidence that my entire "My Documents" folder had been zipped and uploaded somewhere by some exploit when I was using windows 7. So for sensitive personal documents use encryption.
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  9. Posts : 25,689
    Windows 11 Pro 22621.169
       #9

    swarfega said:
    I agree with you about backing up junk. But I dont back up browser info anyway, I rely on the browser's own sync.
    I do a complete image, I am not about to remove a Browser everytime I do one.
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  10. Posts : 4,552
    Windows 11 Pro 64-bit
       #10

    SSD designers developed an interface allowing the operating system to inform the controller that certain blocks are no longer in use via the TRIM command. This allows the internal garbage collector to electronically erase the content of these blocks, preparing them for future write operations. Blocks of data processed by garbage collector are physically erased. Information from such blocks cannot be recovered even with the use of expensive custom hardware. Forensic researchers named this process as “self-corrosion” .
      My Computer


 

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