30 days as per: https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/mdo-data-retention?view=o365-worldwide
Microsoft Azure and 365 security logs retention?

EnterpriseArchitect
5,851
Reputation points
How far back or how long does Microsoft keep the logs that the Kusto QL may query from this website https://security.microsoft.com/v2/advanced-hunting?
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