XLM + AMSI: New runtime defense against Excel 4.0 macro malware
We have recently expanded the integration of Antimalware Scan Interface (AMSI) with Office 365 to include the runtime scanning of Excel 4.
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HAFNIUM targeting Exchange Servers with 0-day exploits
Microsoft has detected multiple 0-day exploits being used to attack on-premises versions of Microsoft Exchange Server in limited and targeted attacks.