How to Protect Excel Workbooks with Passwords
Critical Warning About Encryption!
No software protection is 100% foolproof, especially against determined users. If you lose your password, Excel cannot recover it. Always save copies and consider using physical security or digital rights management (DRM) for highly sensitive data.
Protecting an Excel file means locking down different components – the sheet’s contents, the workbook structure, or the entire file itself. Understanding this hierarchy is key to making sure you are actually protecting what you think you are.