It’s always been difficult to protect the Excel workbooks that contain your budget, account numbers, contacts, or other important information.
With 2007 Microsoft Office system and older versions, there was not an easy way to protect your documents from unwanted hands.
Office 2010 solves this problem by letting you create a password for your documents. Simply go under File, Info, and Protect Document to create a password. In order to access your document, you will need to enter your password.
Word of caution: Remember your password — as once you protect your document, there is no way to access the document without the password. And no password recovery tool is available at the moment.
Anubhav Chopra
Senior, University of California at San Diego