Microsoft is disabling Excel 4.0 macros by default to protect users


To safeguard customers from fraudulent documents, Microsoft will shortly start deactivating Excel 4.0 XLM macros by default in Microsoft 365 tenancies.

Malicious campaigns that use Excel 4.0 XLM macros include TrickBot, Qbot, Dridex, Zloader, and a variety of others.

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