The use of .XLL Excel files by threat actors to infect computers with malware is growing fast. Learn more about this relatively new technique and how to protect from it. Image: Sashkin/Adobe Stock ...

Microsoft says the Excel spreadsheet software is now blocking untrusted XLL add-ins by default in Microsoft 365 tenants worldwide. The company announced this change in January with a new entry added ...

A new report urges Microsoft Excel users to take action to protect themselves from a dramatic rise in cyberattacks using malicious add-in files. In its Threat Insights Report for the fourth quarter of ...

Microsoft is working on adding XLL add-in protection for Microsoft 365 customers by including automated blocking of all such files downloaded from the Internet. This will help tackle the rise of ...

If you use Excel 40 hours a week (and those are the weeks you are on vacation), welcome to the MrExcel channel. Home to 2,400 free Excel tutorials. Bill "MrExcel" Jelen is the author of 67 books about ...