Microsoft Adds New Layer of Access Control for SharePoint Online Sites

A new setting for SharePoint Online sites turns them into “restricted sites,” meaning that only site members noted in assigned groups can access site content. I thought that’s the way sites connected to Microsoft 365 groups work, but this is the “to be sure, to be sure” lockdown features. You can also restrict sites that aren’t connected to Microsoft 365 Groups. Add some sensitivity labels and the block download policy, and sites can be pretty secure.

https://office365itpros.com/2023/09/06/restricted-sites-spo/