The password acts as both the encryption key and a decryption key. To unencrypt a locked Excel file, the recipient has to enter the same password that was used to lock it.

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.

Unique passwords are essential for online investors Keeping track of them can be tough Word and Excel can encrypt passwords to keep them safe USA TODAY markets reporter Matt Krantz answers a ...

A new campaign is spreading the LimeRAT Remote Access Trojan by harnessing an old encryption technique in Excel files. In addition, the modular Trojan can spread through connected USB drives ...

I backup all of my passwords into a password encrypted Excel file. It contains all my personal and biz passwords. At least over 100+. I keep the file backed up offsite, and keep a backup CD in my ...

Need to keep a file confidential? Microsoft Word and Excel make it simple to assign a password.