Password Protection Excel

Posted on 2011-10-17
Last Modified: 2012-05-12

I am keeping some sensitive information within a Microsoft Excel document. I know there is an in built password protection option however I know this is not that strong a protection.

Can anyone recommend a good alternative to password (file or folder level) that they could recommend?

Many thanks,


Question by:gisvpn
    LVL 23

    Expert Comment

    Truecrypt is the tool of choice for transparent folder protection.

    For mailing documents securely, I'd use WinRAR (not WinZip).

    Elcomsoft do a long list of password recovery tools, but they don't yet do either of these....
    LVL 23

    Expert Comment


    Author Comment

    All I would like to be able to do is either enter a password when accessing a folder in which the file is in or when the file is opened - and it be relatively secure.

    I dont think from what I am reading that Truecrypt will allow this?
    LVL 9

    Accepted Solution

    If you are using Office 2007 or 2010 then the encryption used is stronger than 2003 or earlier. It uses 128 bit AES so is very strong as long as you use strong passwords.

    To encrypt your document in office 2007:

    1) Click on the Office Orb
    2) Go to the “Prepare” section
    3) Click on “Encrypt Document”
    4) Type in your password and click OK
    5) Retype your password and click OK

    To encrypt your document in office 2010:

    Click the File tab, then Click Info.  On the menu to the right Click Protect Document and Click Encrypt with Password.
    LVL 23

    Assisted Solution

    Truecrypt will do that.

    Elcomsoft still offer a cracker for 2010, but x3man is right, the later encryption is tougher.

    Author Comment

    thanks x3man, I had not realised that it was much better in 2007/2010. I may well just try this.

    DanCh99 - yes I can see how it does it but it, in my opinion, is not very practical or usable. It does not allow you to go to the folder and then be prompted for the password? The process of mounting and demouting etc will be very annoying and if I left it mounted what if someone simply accessed my computer and access the file? unless I have missed something.

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