MT.1153 - Real-time Monitoring should be enabled

Overview

Verify that real-time monitoring is enabled as core protection function.

Disabled real-time monitoring allows malware to execute without immediate detection.

Remediation action:

1. Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
2. Edit the relevant Microsoft Defender Antivirus policy
3. Enable Allow Real-time Monitoring

Related links

• Configure Microsoft Defender Antivirus
• Microsoft Endpoint Manager

Test Metadata

Field	Value
Test ID	MT.1153
Severity	High
Suite	Maester
Category	Defender
PowerShell test	Test-MtMdeRealtimeMonitoring
Tags	Defender, Maester, MT.1153

Source

• Pester test: tests/Maester/Defender/Test-MtMdeAntivirusPolicy.Tests.ps1
• PowerShell source: powershell/public/maester/defender/Test-MtMdeRealtimeMonitoring.ps1