@Anonymous ,Based on my checking, for the Microsoft Defender Antivirus report, it gets the report via "Get deviceManagementCachedReportConfiguration".
https://learn.microsoft.com/en-us/graph/api/intune-reporting-devicemanagementcachedreportconfiguration-get?view=graph-rest-beta
For Antivirus Summary under Endpoint security, it gets the information from deviceManagementConfigurationPolicy,
https://learn.microsoft.com/en-us/graph/api/intune-deviceconfigv2-devicemanagementconfigurationpolicy-get?view=graph-rest-beta
From your description, it seems the information in two sides is not the same. To check on this, we need to check in the background. Here, we suggest to open case to look into it. Here is a link with the detailed steps to open case:
https://learn.microsoft.com/en-us/mem/get-support
Thanks for your understanding and have a nice day!
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