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Migrating Exchange Online Mail Contacts to Entra ID Guest Accounts

Microsoft actively develops Azure AD external identities and doesn't do much with mail contacts. Maybe it's a good idea to migrate mail contacts to Azure AD guest accounts. This article explores what's involved in moving mail contacts over to Azure AD guest accounts using PowerShell.

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Microsoft 365 Exchange Online Domain Transfers: Validation Phase Part I

In this edition of our series on the "Top 5 Best Practices for Exchange Online Domain Transfers," we delve deeper into the importance of validating your plan prior to implementation. Implementing a well-tested and practiced process will help prevent mistakes and encountering unknowns during the migration. Join us as we explore the key considerations for a successful validation phase.

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Using Microsoft 365 Auditing and Alerts to Monitor Email Forwarding

Microsoft 365 auditing makes lots of data available to administrators to help them understand what happens in a tenant. When attackers try to compromise accounts, they can leave fingerprints behind in audit data. Being aware of what you might find in the data helps suppress BEC attacks.

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Source Control for Microsoft 365 Tenant Admins: Part III

In the third and final article in a series covering Git-based Source Control for Microsoft 365 Tenant Admins, Andy Schnieder covers how to leverage tools to streamline your workflow with Git and gain insight into some useful advanced techniques.

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Outlook Elevation of Privilege Vulnerability Leaks Credentials via NTLM

Among the latest set of patches released by Microsoft, a fix for CVE-2023-23397 is available to fix an NTLM vulnerability in Outlook for Windows clients. The update closes a hole where attackers can use specially formatted messages to force NTLM credentials to be sent outside the organization.

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Why Microsoft 365 License Assignment Dates Can Be Misleading

Microsoft 365 tenant administrators might want to know when user accounts receive a specific license. Unhappily, Azure AD license assignment dates can mislead, so some interpretation and personal knowledge might be needed to find out just when a user was licensed.

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How Quickly do Threats leak from a Compromised AD into the Cloud?

As organizations move to the cloud, on-premises environments (and their security) are put in the background as the focus shifts to the cloud. Nevertheless, most organizations I know are in a hybrid scenario where the on-premises environment holds the master data and synchronizes everything into Azure Active Directory. This blog explores how an on-premises environment is connected to the cloud and how an attacker might move from on-premises to the cloud laterally.

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