If you have a Microsoft Word 2007 document that you would like to make read-only or if you would like to add password protection, Word offers a few options to secure your file. Here are a few security features offered in Word:
Encrypt Document: Adding encryption to your document will require that a password be entered to open the document. To encrypt your document, click on the Microsoft Icon > Prepare > Encrypt Document. A dialog box will prompt you to set a password.
Read-only Document: You can set your document to be read-only and additionally set a password to open or modify the document. To access these options, click on the Microsoft Icon > Save As, then in the bottom left corner, click on Tools > General Options.
A dialog box will open and you can choose to make the document read-only and to add a password to open and/or a password to modify. Click OK once you have made changes.
When the file is opened, a dialog box will prompt users to enter the password. Keep in mind that if users open the file as a read-only document, they will be able to edit and save as a new document.
Mark as Final: If you want your file to be read-only, you can also mark the document as final. This will disable editing and typing tools. To do this click on the Microsoft Icon > Prepare > Mark as Final. If you decide to open it later for editing, you can select Mark as Final again to set the document to the normal mode.
Note: If you lose or forget any passwords, they cannot be recovered.