Workbook Protection Password Overwritten
 

Hello

Good Morning.

I am able to overwrite passwords written to protect workbook windows and
structure in Excel 2003.

Mine may be an older version of Excel 2003. Has it been rectified by
Microsoft within Excel 2003?

Is there no solid defence against it? Or is there any way to defend against
it using some procedures that run when the unprotect workbook event happens?

I am trying to find a somewhat indirect solution by not allowing the cracker
to save his changes. One Dave Peterson helped. However I will appreciate if
someone can give me a robust solution.

Thank You

M Varnendra

Workbook Protection Password Overwritten
 

From Chip Pearson's site........................

All protection mechanisms in Excel are really intended to prevent the user from
accidentally changing a value or some code. The security just isn't strong
enough to provide real protection of proprietary information or information or
code with intellectual property value. For that level of security, you should be
writing your code in Visual Basic 6 or VB.NET. See Creating A COM Add-In for
details about creating a COM Add-In and Automation Add Ins A Function Libraries
for details about creating an Automation Add-Ins.
.................................................. ...

For links visit the site.

http://www.cpearson.com/excel/workbooktimebomb.aspx

And no................the insecure security issue has not been rectified to
date.


Gord Dibben MS Excel MVP

On Tue, 29 Apr 2008 02:02:00 -0700, Varne
wrote:

Hello

Good Morning.

I am able to overwrite passwords written to protect workbook windows and
structure in Excel 2003.

Mine may be an older version of Excel 2003. Has it been rectified by
Microsoft within Excel 2003?

Is there no solid defence against it? Or is there any way to defend against
it using some procedures that run when the unprotect workbook event happens?

I am trying to find a somewhat indirect solution by not allowing the cracker
to save his changes. One Dave Peterson helped. However I will appreciate if
someone can give me a robust solution.

Thank You

M Varnendra

Workbook Protection Password Overwritten
 

Hello!

Good Morning.

Thanks. I am going to learn Com Add-in and VB6.

Regards
M Varnendra

"Gord Dibben" wrote:

From Chip Pearson's site........................

All protection mechanisms in Excel are really intended to prevent the user from
accidentally changing a value or some code. The security just isn't strong
enough to provide real protection of proprietary information or information or
code with intellectual property value. For that level of security, you should be
writing your code in Visual Basic 6 or VB.NET. See Creating A COM Add-In for
details about creating a COM Add-In and Automation Add Ins A Function Libraries
for details about creating an Automation Add-Ins.
.................................................. ...

For links visit the site.

http://www.cpearson.com/excel/workbooktimebomb.aspx

And no................the insecure security issue has not been rectified to
date.


Gord Dibben MS Excel MVP

On Tue, 29 Apr 2008 02:02:00 -0700, Varne
wrote:

Hello

Good Morning.

I am able to overwrite passwords written to protect workbook windows and
structure in Excel 2003.

Mine may be an older version of Excel 2003. Has it been rectified by
Microsoft within Excel 2003?

Is there no solid defence against it? Or is there any way to defend against
it using some procedures that run when the unprotect workbook event happens?

I am trying to find a somewhat indirect solution by not allowing the cracker
to save his changes. One Dave Peterson helped. However I will appreciate if
someone can give me a robust solution.

Thank You

M Varnendra