What the difference is between the two Microsoft Graph Security connectors?

The first seems to include information that comes in from the second.

Microsoft Graph Office 365 Security and Compliance Connector was added last year in May with v11 of the Integration. But there’s no explanation as to why or what it does differently. Or if I need one or both of them.

Thank you, so both are not needed. One or the other depending on if you need the Security & Compliance alerts or not

Exactly.
just to sum up in short:
Microsoft Graph Security Connector : will ingest all alert types excluding Security & Compliance, and fast
Microsoft Graph Office 365 Security and Compliance Security and Compliance Connector: will ingest all existing alert types

Hello @Ben_Montour

The newer connector, Microsoft Graph Office 365 Security and Compliance Security and Compliance Connector , was added in order to support another type of alerts, called Security and Compliance alerts
In our the Microsoft Graph Security Connector , when we applied API filters, those alerts were not showing up for some reason.
Thus, we have added the second one.

This connector - Microsoft Graph Office 365 Security and Compliance Connector Security and Compliance Connector - will fetch all alert types from Microsoft Graph Security, so if that's your use case - you should use it.

We would add one thing - the Microsoft Graph Security Connector is going to be faster and more resource efficient, so if "Security and Compliance" alerts are not needed in your case - we would recommend using this connector.

We are aware of the fact that this is not currently in our documentation site, and we will add it as soon as we can.

Thank you for your question!