XLS files sent via emails appear password protected but aren’t, opening automatically to install malware from compromised macros, according to researchers. Hackers have updated the age-old Excel ...

To decrypt any given encrypted Excel file, Excel first tries to use an embedded, default password, “VelvetSweatshop,” to decrypt and open the file and run any onboard macros or other ...

“Locky” crypto-ransomware rides in on malicious Word document macro Malware depends on users falling for its pleas—twice if Office macros aren't on.

Cybersecurity researchers warn that multiple forms of malware are being stealthily delivered via Microsoft Excel XLL files.

You can add or remove a password from your Excel spreadsheets through the File tab. You'll do it slightly differently on a Mac and PC.