Need help protecting confidential documents with passwords?

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Discussion Overview

The discussion revolves around methods for password protecting confidential documents and folders, particularly in the context of personal security and data protection. Participants explore various approaches and tools for securing files, as well as considerations regarding the effectiveness of these methods.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks assistance in password protecting documents and folders to prevent unauthorized access.
  • Another participant questions the intended audience for the protection, suggesting a need for clarity on who the files are being protected from.
  • A participant humorously mentions a sibling as a potential threat but emphasizes the need for security due to previous theft of a laptop containing confidential documents.
  • Instructions are provided for using Excel's password protection feature, specifically through the "file->save as->tools->general options" method.
  • Concerns are raised about the effectiveness of Excel's password protection, with references to password cracking tools and the historical limitations of Microsoft’s encryption strength.
  • One participant shares information about the limitations of older encryption algorithms, specifically mentioning the 40-bit key length and its vulnerability to brute force attacks.
  • A suggestion is made that the best way to protect confidential documents is to avoid storing them on a laptop altogether, advocating for storage on a computer or server with restricted access.

Areas of Agreement / Disagreement

Participants express differing views on the effectiveness of password protection methods, with some highlighting vulnerabilities in existing systems while others provide practical solutions. The discussion remains unresolved regarding the best approach to secure confidential documents.

Contextual Notes

There are limitations regarding the effectiveness of password protection methods discussed, particularly concerning the strength of encryption algorithms and the potential for password cracking. The conversation also reflects a range of personal experiences and security concerns.

Lila
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hey y'all

I need help putting passwords on documents, i.e. these documents CANNOT be opened unless the password is provided. This could also be for a folder.

Like I have documents in a folder, and I do not want anyone else to have access to this folder, I would therefore like to password protect access to this folder and if possible the files inside.
thanks!
:)
 
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Who are you trying to protect the file from?
 
hahaha! :P from my little sister...

totally kidding, not anyone in particular, but some things are just private and confidential, like work documents.. and I many times let others use my laptop.

+ my laptop got stolen recently, also with a lot of confidential documents unprotected!


can u help me? :D
 
thanks! :)
 
russ_watters said:
file->save as->tools->general options

I suppose that might slow down your little sister. Someone who's going to go after your data will (at least) have something as powerful as, say http://lastbit.com/excel/, or any of a number of other excel password cracking tools out there.

I don't know enough about excel or what the password protection actually does, but, considering their history on this, MS isn't exactly confidence inspiring.
 
I was curious, so I Googled: http://lastbit.com/rm_guaranteed.asp
If you’re curious: Guaranteed Recovery is the special sort of Brute Force Attack. Formerly in the USA there were serious legislative limitations on the exporting of strong encryption algorithms. Only encryption algorithms with key length up to 40 bit could be exported freely. That’s why Microsoft limited the strength of the Office encryption to 40 bit. Guaranteed Recovery performs a brute force attack on the internal 40 bit key instead of the original password. The 40 bit key length means that there are only 2^40 (about a trillion) possible combinations. It is possible to test them all in a reasonable amount of time.
So no, it isn't all that strong.
 
If your concern is protecting confidential documents from theft, the best approach is to not save them on a laptop at all. Confidential documents should be stored on a computer or server with restricted access.
 

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