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Solved: How do I fix Antimalware Service Executable high resource usage in Windows 11

Problem Symptom Many Windows users reported facing high CPU, Disk, and memory usage on their Windows 11 PC. After checking in the Task Manager, noticed that a process called Antimalware Service Executable: Microsoft Defender Antivirus Service takes up most of the computer resources. Follow the below solution steps to resolve Antimalware Service Executable high resource …

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MC395210: Microsoft Defender for Office 365: Recipient Block Using Tenant Allow/Block List Senders

Updated July 19, 2022: We have updated the rollout timeline below. Thank you for your patience. Today, the Tenant Allow/block List is used to prevent users from receiving email from selected senders using the sender block. However, users are still able to send email to that email address or domain as recipient. With this update, …

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MC394261: Option to automatically allow Spoofing and Impersonation related message directly using Admin Submissions

Today security administrators can use the Submissions page in the Microsoft 365 Defender portal to submit email messages, URLs, and attachments to Microsoft for scanning. We are enhancing the email submission capability with an option to automatically allow Spoofing and Impersonation related emails from senders/infrastructure that were classified as legitimate by the admin, despite being …

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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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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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MC390411: Microsoft Secure Score is adding new improvement action for App governance

We’re updating Microsoft Secure Score improvement actions to ensure a more accurate representation of security posture. This update will be available for customers with an active app governance license. The update includes a new recommendation ‘Regulate apps with priority account consent’ as a Microsoft Secure Score improvement action.

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MC388526: Microsoft Secure Score is adding new improvement actions for Microsoft Defender for Identity

Updated June 16, 2022: We have updated the rollout timeline below. Thank you for your patience. We’re updating Microsoft Secure Score improvement actions to ensure a more accurate representation of your security posture. This update will include this new Microsoft Defender for Identity recommendations as Microsoft Secure Score improvement actions: Resolve unsecure domain configurations We …

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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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MC387682: New opt-in setting for Microsoft Defender for Identity

Over the last few months, the experiences and functions of Microsoft Defender for Identity have been made available in Microsoft’s extended detection and response (XDR) platform, Microsoft 365 Defender. Merging identity data and functions into this XDR experience is a valuable addition to a security teams capabilities, with identity providing important context to detection logic …

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