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.

So while someone could get at your files if they know your password (the decryption key), they won't be able to take out a drive from your system and access what's on it, or use a second computer ...

Strong passwords are necessary in today’s digital account-driven world. Follow along to learn how to create a strong password in five steps.