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MC393818: Add DKIM Domain in Sending Infrastructure for Tenant Allow Block Lists-Spoofing

For Microsoft Defender for Office 365 and Exchange Online Protection, we are adding support for providing “DKIM verified domain” as the “Sending Infrastructure” within Tenant allow-block lists-Spoofing, so that Security Administrators can better manage Anti-Spoofing activity and override it based on Spoof Intelligence. Currently, what is supported in this field is either the domain from …

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MC393185: Reminder: Microsoft Office default change – Blocking VBA macros in files from the internet

VBA macros are a common way for malicious actors to gain access to deploy malware and ransomware. As a reminder (MC322553 Feb ’22), to help improve security, we are changing the behavior of Office applications to now block macros in files from the internet. Learn more in this blog post. This change only affects Office …

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MC390410: Tenant Trusted ARC Sealers for Email Authentication

Authenticated Received Chain (ARC) is an email authentication mechanism that helps preserve authentication results across intermediaries. Email authentication mechanisms like SPF, DKIM, DMARC are used to verify the senders of emails for the safety of mail recipients, but some legitimate services may make changes to the email between the send and receipt. This intervention from …

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MC390407: New Location for Key Functions and Direct Access to Other Microsoft 365 Apps in Outlook

The new experience for accessing Mail, Calendar, People, and other Outlook apps that is being previewed behind the Coming Soon option is becoming the default experience. This message is associated with Microsoft 365 Roadmap ID 88848. The main modules in Outlook such as email, calendar, tasks, and people are moving to the left of the …

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MC388229: Microsoft Defender for Office 365 Preset Security Policies

We are making enhancements to Microsoft Defender for Office 365 preset security policies. It will provide a way to apply the policy to the entire organization and be able to optionally configure a list of custom users and custom domains to protect against impersonation attacks. Impersonation protection applies to Microsoft Defender for Office 365 Plan …

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