Phase 1 - Edge Protection Unfortunately, Edge blocks that were once critical are now relatively simple for bad actors to overcome. Over time, less traffic is blocked here, but it remains an important part of the stack. Edge blocks are designed to be automatic. In the case of false positive, senders are notified and told how to address their issue. Connectors from trusted partners with limited repu
![Step-by-step threat protection stack in Microsoft Defender for Office 365 - Microsoft Defender for Office 365](https://cdn-ak-scissors.b.st-hatena.com/image/square/d6e4cb632c7025e9f5e05fd314fbf6dcd6144e8d/height=288;version=1;width=512/https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fmedia%2Fopen-graph-image.png)