MT.1154 - Full Scan Removable Drives should be enabled

Overview

Verify that full scan of removable drives is enabled to mitigate USB risks.

Disabled removable drive scanning allows USB-based malware infections.

Remediation action:

1. Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
2. Edit the relevant Microsoft Defender Antivirus policy
3. Enable Allow Full Scan on Removable Drives

Related links

• Configure Microsoft Defender Antivirus
• Microsoft Endpoint Manager

Test Metadata

Field	Value
Test ID	MT.1154
Severity	High
Suite	Maester
Category	Defender
PowerShell test	Test-MtMdeRemovableDriveScanning
Tags	Defender, Maester, MT.1154

Source

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