Password Protecting Excel Spreadsheet Data Key Takeaways : Securing Excel worksheets is crucial for sensitive data. Use `Alt + F11` to open the VBA Editor for managing worksheet visibility.

There are several options available to you to protect your Excel file with a password. Remember that once you protect the Excel file, you cannot open it without entering the password.

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.