Petri's GET-IT: Office 365 Security 1-Day virtual conference is a full day of free learning dedicated to deep technical Microsoft Office 365 content aimed at accelerating the understanding of the security components of the platform as well as how to execute tasks securely inside the environment.
Take a look how Microsoft is better at security than you are, how you can control external sharing, me showing some self-control on telling you about PowerApps, getting better performance, and my personal sadness around OneNote.