Nov 24 2022
How can we block the user and URL in O365 Defender portal ?
Nov 27 2022
It depends which products are deployed in your environment, and where you would like to enforce the block, but in general:
1. Blocking users: Remediation actions in Microsoft Defender for Identity - Microsoft Defender for Identity | Microsoft...
2. Blocking senders (of emails): Create blocked sender lists - Office 365 | Microsoft Learn
3. Blocking URL in Defender for Endpoint (put in mind you have to enable network protection for this to work on non-Microsoft browsers): Create indicators for IPs and URLs/domains | Microsoft Learn
4. Block URL in Defender for Office: Allow or block URLs using the Tenant Allow/Block List - Office 365 | Microsoft Learn
Hope it helps :)