About Security and Securing Files in Microsoft Office

If you found this article, prepare yourself for bad news.

While you can password-protect files from being changed, there are hacks and cracks available for free and for a price.
While you can password-protect files from being opened or viewed, there are hacks and cracks available for free and for a price.
The sad truth is that there is very little keeping someone who really wants to get into your file from doing so.
The average user does not know how to hack, crack, or otherwise unprotect a Microsoft Office file.
If you absolutely cannot allow someone to change, copy, or otherwise manipulate your file, don't send it to them electronically.