An icon in the shape of a lightning bolt. Impact Link If you want your Microsoft Excel spreadsheet to have a little more protection, you can encrypt its data by setting a password. You can also ...

Open the spreadsheet you want to protect in Excel, click the "Review" tab and then click "Protect Sheet" in the Changes group to display the Protect Sheet dialog.

If you have sensitive data you'd like to keep from prying eyes in a Microsoft Excel file, the easiest way to protect it is with Excel's built-in password tools.

How to lock cells in Microsoft Excel, so you need a password to change or erase data Written by Ryan Ariano ...