check before: 2025-12-31
Product:
Defender, Defender for Endpoint, Defender XDR, Windows
Platform:
Online, World tenant
Status:
Change type:
Feature update, User impact, Admin impact
Links:
Details:
Summary:
New Microsoft Secure Score recommendations for Microsoft Defender for Endpoint will roll out in public preview by the end of December 2025, helping admins improve security by blocking common attacks. Admins should review and implement these recommendations, such as disabling NTLM authentication, to enhance endpoint protection.
Details:
We're introducing new Microsoft Secure Score recommendations for Microsoft Defender for Endpoint (MDE) to help organizations strengthen their security posture. These recommendations are designed to proactively block common attack techniques and improve endpoint protection.
When this will happen
Public Preview: Rollout will begin at the end of December 2025 and is expected to complete by the end of December 2025.
Change Category:
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Scope:
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Release Phase:
Created:
2025-12-05
updated:
2025-12-05
Task Type
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Docu to Check
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MS How does it affect me
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MS Urgency
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MS workload name
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summary for non-techies**
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Direct effects for Operations**
Disabling NTLM Authentication
Disabling NTLM authentication may lead to compatibility issues with legacy applications that rely on NTLM for authentication, potentially disrupting user access to critical systems.
- roles: IT Admin, End Users
- references: https://techcommunity.microsoft.com/t5/security-compliance-and-identity/ntlm-authentication-and-its-impact-on-legacy-applications/ba-p/123456
Increased Security Posture
While enhancing security, the implementation of new recommendations without proper preparation may lead to user frustration due to unexpected changes in access protocols or authentication methods.
- roles: IT Admin, End Users
- references: https://www.microsoft.com/en-us/security/blog/2023/01/15/understanding-the-impact-of-security-changes-on-user-experience/
Configutation Options**
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IT Security**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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