Microsoft Defender for Office 365
Updates to the common attachment filter in the anti-malware policy in government clouds

We are enhancing the common attachments filter (Anti-malware policy) to expand list of available file types and also manage custom file types in the portal.
More info: https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/anti-malware-protection?view=o365-worldwide#anti-malware-policies

September CY2022