In the case of false positive, senders are notified and told how to address their issue. Over time, less traffic is blocked here, but it remains an important part of the stack.Įdge blocks are designed to be automatic. Unfortunately, Edge blocks that were once critical are now relatively simple for bad actors to overcome.

Stay tuned till the end of this article for a unified graphic of all 4 phases of Defender for Office 365 protection! Phase 1 - Edge Protection