I have started a series on Zero Trust Security model in Microsoft 365. This is being published on Petri. You can read it here.

Zero Trust is a security model that can be applied to Microsoft 365. It focuses on improving security by verifying and testing both the identity and device before granting access to resources. You can think of Zero Trust as a way of working, wherein you take it for granted that every user and device accessing your environment – in or out the network – to be compromised, and hence, take actions to confirm the validity of each of those.