There’s a lot of debate around the need to separate Microsoft 365 administrator accounts, especially when controls such as Privileged Identity Management exist within an organization. However, even with PIM there are remaining security concerns which necessitate the operation of separate accounts. This article explains the importance of using separate accounts; details how to target different Conditional Access policies for admin and user accounts and highlights how this approach increases your security posture and limits potential attack vectors against administrator accounts.
There are many ways in which you can improve the security of your Exchange Online environment. In this article, Sean McAvinue details the most important steps that admins can immediately implement to align Exchange Online tenants with a good security baseline and posture.