I have an old Word 2007 document that I don't remember the password for. I'm guessing a brute force attack is the way to go to get it open. Anyone know of any free tools I can use to do this?
If the file is saved in *.docx format, I believe it uses strong encryption that you would need to dictionary or brute force attack.
A search on the internet will show many software companies. I don't know of any free ones. If you do a lot of searches you sell see two or three names pop-up over and over. There are also online services, if you want to pay and trust them with the contents of your document.
I too learned the hard way and started using Keepass not only for website passwords, but document passwords as well. I know it won't help now, but maybe it will save you in the future.