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 ...

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 ...

The days are numbered for hackers using Excel’s XLL features to deliver malware to Microsoft customers, the company has announced. XLL files are similar to DLL files and provide the program with a ...