[WindowsCentral.com]

You can enable, customize, and disable notifications for Microsoft Defender features and account protection, and in this guide, we'll show you how to complete the task.
On Windows 10, the Windows Security app can push notifications for various security features to alert you about malware detections and other threats detected by the Microsoft Defender Antivirus. Also, the app can send alerts if an app is getting blocked by the Microsoft Defender Firewall, and when the system is having problems protecting your account.

Full story from the WindowsCentral blog...