Microsoft will soon begin disabling Excel 4.0 XLM macros by default in Microsoft 365 tenants to protect customers from malicious documents. Excel 4.0 macros, or XLM macros, were first added to Excel ...

Microsoft has announced that Excel 4.0 (XLM) macros will now be disabled by default to protect customers from malicious documents. In October, the company first revealed in a Microsoft 365 message ...

Researchers discover progressively complex and effective XL4 attacks that take advantage of the many organizations that still rely on the old functionality. Excel 4.0 macros have been around for ...

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 ...

Microsoft's Security Intelligence team has warned that it has been tracking a "massive" phishing campaign that attempts to install a remote access tool onto PCs by tricking users into opening email ...