61352 – Microsoft Defender for Office 365: Blocking URLs and Files with Tenant Allow/Block List

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check before: 2021-01-31


Advanced Threat Protection - Office 365, Exchange, Microsoft Defender for Office 365


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One of the ways EOP protects customers is by blocking malicious attachments, URLs, and certain senders from reaching end users. We also understand that from time to time, customers may have special needs to block something on their own that our filters might find to be not malicious. In order to provide a way for our customers to do this at time of click and during mail flow, we're developing a portal to help you self-serve and do it yourself. This portal will give admins the opportunity to explicitly allow or block attachments, URLs, senders and even certain recipients in your Office 365 tenant. The first phase of this rollout enables blocking of URLs and files. We feel that this is most important to our customers to protect them from getting compromised. The next phases of this will include the ability to allow files, URLs, and senders.

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