How to Make an Excel Spreadsheet "Read Only" for Other People. When multiple employees have access to company spreadsheets, it's important to prevent unauthorized changes.

Disabling Read-Only Marked as Final Files in Excel When an Excel worksheet is Marked as Final, it is not meant to be edited, which means that commands, typing and proofing marks are all disabled.

Attackers can attempt to hide malicious payloads in Excel files sent by e-mail by using a standard Excel feature, according to a Tuesday post by Mimecast researchers.

The Excel read-only technique was used in this scheme to "fool anti-malware systems." "Many anti-malware engines have difficulty deciphering encrypted files, so getting 'free' encryption as part of a ...