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 have a number of spreadsheets that I use to store sensitive information. Usernames, passwords, etc. These documents are password protected themselves, but if they're anything like "protected" PDFs, ...

The Mac operating system provides a way for you to lock Excel with a password to prevent unauthorized use by using Keychain Access. Removing this password requires ...

Excel offers no such constraint. If someone is determined to enter bad data, they can simply paste values over a validated range or open the file in another program to completely bypass the rules I ...