Microsoft Defender for Office 365: Tenant Allow Block List to Support URL Top-Level Domain Blocking

Microsoft will soon be introducing a new feature for Microsoft Defender for Office 365 that allows users to block URLs based on their top-level domain. Users can create entries in the Microsoft 365 Defender portal or PowerShell using the format "*.TLD/", where TLD refers to any top-level domain like .net, .biz, .io, .movie, country codes like .in, .us, .ru, etc. The feature applies to customers with Exchange Online Protection, Microsoft Defender for Office plan 1, or plan 2 service plans. The new feature will not affect existing Tenant Allow Block List entries, and no changes are required for preparation. The rollout of the feature will begin in late September 2023 and will be completed by late October 2023. This message is associated with Microsoft 365 Roadmap ID 115506.

Once the feature is complete, all URLs related to "*.TLD/" will be blocked, including subdomains, domains, or sub-paths during mail flow, and at the time of click across Microsoft Teams and Office apps if Safe Links are enabled.

Microsoft Defender for Office 365 enables organizations to protect their systems from various attacks and suspicious activities. This new feature will provide additional security to customers by enabling them to block URLs based on their top-level domains and protect against malwares.

The post Microsoft Defender for Office 365: Tenant Allow Block List to Support URL Top-Level Domain Blocking appeared first on M365 Admin.