![]() Create new rule and provide alert details. Since the least frequent run is every 24 hours, filtering for the past day will cover all new data. Select the corresponding role to assign the manage security settings permission.įor better query performance, set a time filter that matches your intended run frequency for the rule. Check RBAC settings for Microsoft Defender for Endpoint in Microsoft 365 Defender under Settings > Permissions > Roles.Assign the security administrator or security operator role in Microsoft 365 admin center under Roles > Security admin.To manage required permissions, a global administrator can: If you only have manage permissions for Microsoft 365 Defender for Office, for instance, you can create custom detections using Email tables but not Identity tables. You can also manage custom detections that apply to data from specific Microsoft 365 Defender solutions if you have permissions for them. If you have RBAC configured, you also need the manage security settings permission for Defender for Endpoint. This role is sufficient for managing custom detections only if role-based access control (RBAC) is turned off in Microsoft Defender for Endpoint. Security operator-Users with this Azure Active Directory role can manage alerts and have global read-only access to security-related features, including all information in the Microsoft 365 Defender portal. Security administrator-Users with this Azure Active Directory role can manage security settings in the Microsoft 365 Defender portal and other portals and services. Security settings (manage)-Users with this Microsoft 365 Defender permission can manage security settings in the Microsoft 365 Defender portal. To manage custom detections, you need to be assigned one of these roles: Required permissions for managing custom detections You can set them to run at regular intervals, generating alerts and taking response actions whenever there are matches. These rules let you proactively monitor various events and system states, including suspected breach activity and misconfigured endpoints. Want to experience Microsoft 365 Defender? Learn more about how you can evaluate and pilot Microsoft 365 Defender.Ĭustom detection rules are rules you can design and tweak using advanced hunting queries. ![]()
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