If you use a computer, you probably have some Microsoft Excel documents on your Mac or PC that you wouldn't want other people to find and read.
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Excel serves not only the average person, but also businesses, government institutions, and millions of other people around the world. Whether you're creating charts, converting PDFs, or simply entering data, the best way to keep that information is to learn how to password protect an Excel file.
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Add password
Step 1: In Excel, open the document you want to protect with a password.
Step 2: Click on “File”, followed by “Info”.
Step 3: Next, click on the “Protect workbook” button. From the drop-down menu, select “Encrypt with password”.
Step 4: Excel will then ask you to enter a password. Choose one that is complex and unique and record it in a trusted password manager.
See also: Microsoft Excel: Blocks untrusted XLL add-ins by default
File encryption
Once you've password-protected your most important files , it's worth considering adding additional layers of security to your system. The easiest way to protect a large number of records is to encrypt them. Fortunately, encryption programs are not difficult to find. Windows 10 Professional users have a built-in encryption tool called BitLocker . However, if you want to download a free version with customization options for various data types, you can try the free, open-source solution VeraCrypt .
Source: digitaltrends
