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Is the 35-times overwriting of the data safe? Can any human recover the data?


I did not want to include data overwriting up to 35 times in " SafeDelete ", but some users insisted on this feature. Since it was not a big hassle for me, I just integrated it.




Whether 1-35 times usually does not matter! 

As a person you tend to consider things that are repeated more often than safer. Similarly, deleting is just a psychological effect that we humans often need. 

But in this case, it is  exaggerated security  and a  waste of time .

It's like having a glass of water. If you have completely emptied this time, then it's just empty. You can always try to drink from it and see if something is inside, but it still remains empty.

Attention SSD and network multiple duplicate files!



Rather, the question arises whether the data may not be stored elsewhere. This would be true if in the background a software, such as a backup program is in operation, which permanently stores the data on another computer and possibly even logs all changes.

* SSD does not always allow secure deletion by controlling file storage!

Reliable deletion and overwriting of data is not always possible in the conventional way.


* Files in the buffer / RAM!
A restart of the PC is also recommended the duplicates can also be located in the intermediate memory!

PS:
Some data is so sensitive that you can not use it if you miss a single bit in the wrong place. This is the case with 7-Zip archives. That is also the reason why 7-Zip should only be used as a backup program.

Except the data is not that important, but who secures even unsafe data.

With Zip, the loss is not so big, you may lose ~ 32,000 bytes in the loss of 1-bit.
Which is not without, but at least less, with 7-Zip it can sometimes be here with highest compression over 100 MB and more. I do not want to say you should not use 7-Zip, but you should think about it.

In 7-Zip there are also other options to increase the security of the data, but then it is not so effective in compression.
Safety has its price :-).

Info:

7-Zip is still a very good program that has very high compression and is in many ways very useful.

Does not have much to do now with safe deleting but with the security of the data.

So, sure deleting is not art.
Deleting by multiple overwriting no longer brings security.
Whether with random data or with zeros does not matter either.


(Image-1) Is the 35-times overwriting of the data safe? Can any human recover the data?
Is the 35-times overwriting of the data safe? Can any human recover the data?


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FAQ 5: Updated on: 25 May 2024 18:49 Windows


► ► ► ► ... more information about the software BlankAndSecure     

BlankAndSecure

Portable use of the File Eraser under Windows (11, 10, 8.1, 7, ...)!


Safeerase and Windows 10 / 11 disabled Windows Defender directory protection, problems occur when using the portable version of the File Eraser Blank-And-Secure
BlankAndSecure

Remove File Eraser from Windows (11, 10, 8.1, ...) wrong Language, how to!


It is easy to uninstall the File Eraser from Windows 11, 10, 8.1, ,  or other Windows Operating Systems It is sometimes necessary to "Remove File Eraser"
BlankAndSecure

Is it not possible to find not safely deleted files and then delete them safely?


If you are not sure man, remove the entire traces on the hard drive on Windows 11, 10, or MS Server OS Overwriting the free area on the random number
BlankAndSecure

Should I erase the data safely on Windows 11, 10, ... etc.?


No, if this should not be restored then if not you can safely delete the data on all MS Windows Desktop 11, 10, OS and MS Server 2019, 2016, Content:
BlankAndSecure

Recycle Bin on Windows 11, 10, 8.1 Secure Delete!


The recycle bin function in Windows 11, 10, secure deletion is very popular and is often recommended by data protection officers, why not when its so
BlankAndSecure

Difference delete, delete plus, overwrite X times?


The explanation of the difference between delete, delete +, write 1 to 35 times or overwrite the files 1. The difference between deleting, deleting
BlankAndSecure

Can I securely delete the data in the business area, ergo commercially?


Yes, you can use the data backup and delete tool in the business area, ergo commercially, on all MS Windows 11, 10, or MS Server operating systems Shredding

»»

  My question is not there in the FAQ
Asked questions on this answer:
  1. How to deal with files that exist in different locations at the same time?
  2. Why do you lose more data with 7-Zip archives than with Zip archives?
  3. Despite its weaknesses, is 7-Zip a good data compression program?
  4. Why is simply deleting files not a safe method?
  5. Can you find safely deleted files and delete them again?
  6. Which overwriting method is most effective for secure deletion?
  7. What should you keep in mind when securely deleting data on network drives?
  8. Is overwriting the data 35 times really safer than overwriting it once?
  9. What makes 7-Zip useful despite the possible data loss?
  10. What alternatives are there to ensure deleted data cannot be recovered?
  11. In the options "Overwrite x times" I have the option "Overwrite 7 times"?
  12. How does compression of data affect its security if lost?
  13. Why should you worry about 7-Zip security?
  14. Are there differences in secure deletion between different file systems?
  15. Can a virus recover securely deleted data?
  16. What happens if software permanently saves data in the background?
  17. Why do people find multiple overwriting safer?
  18. Why did you include the 35-times overwrite feature in SecureErase?
  19. Is overwriting data 35 times safe? Can anyone recover the data? Thank you for the info.
  20. Was recommended. If there is a lot of data, it can take a while.
  21. What psychological effects play a role in securely deleting data?
  22. Does increased security in 7-Zip impact compression?
  23. Why is some data so sensitive to the loss of individual bits?
  24. Can data still be recovered after overwriting 35 times?
  25. Isn't it excessive to overwrite data up to 35 times?
  26. Is it really an advantage if I overwrite the files 35 times?
  27. Selected for deletion because I read it on some sites on the Internet.
  28. How does network file duplication affect secure deletion?
  29. Isn't it enough to overwrite data once to securely delete it?
  30. Can a backup program prevent data from being securely deleted?
  31. Is overwriting data multiple times a waste of time?
  32. What measures can be taken to increase the security of 7-Zip archives?
  33. Why is 7-Zip not ideal for backups when data loss is a risk?
  34. Is there scientific evidence that multiple overwriting is safer?
  35. How to check if data is stored somewhere else?
  36. What are the risks of leaving files in memory?
  37. What are the challenges of deleting data on SSDs?
  38. Is it possible to ensure that no data remains on SSDs after deletion?
  39. Which programs support secure deletion by multiple overwriting?
  40. What alternatives are there to overwriting 35 times?
  41. How can you be sure that data is really gone after deletion?
  42. What happens with 7-Zip archives if a bit is lost?
  43. What are the advantages of multiple overwriting if it does not provide additional security?
  44. Is overwriting with zeros as safe as overwriting with random data?
  45. Why do people tend to view repetitions as safer?
  46. How to prevent important data from being saved in backup programs?
  47. Is overwriting with random data enough to securely delete files?
  48. Why is secure erase on SSDs more difficult than HDDs?
  49. Can cached files still be recovered after restarting the PC?
Keywords: blank, and, secure, 35, times, overwriting, data, safe, recover, safedelete, feature, since, hassle, Questions, Answers, Software




  

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