Fortunately, Excel provides built-in features that allow you to hide and password-protect your worksheets without requiring any programming skills. Password Protecting Excel Spreadsheet Data ...

Open the Excel file you want to protect with a password. Click on File -> Info. Now select Protect Workbook. Select Encrypt with Password from the list. Now enter the password. Confirm it once ...

To hide the column that contains the full Social Security numbers, highlight the column, click Format, Column, Hide . Now the final step is to password protect the worksheet so the formula is both ...