Windows - BitLocker Policy is created and assigned

Overview

Without a properly configured and assigned BitLocker policy in Intune, threat actors can exploit unencrypted Windows devices to gain unauthorized access to sensitive corporate data. Devices that lack enforced encryption are vulnerable to physical attacks, like disk removal or booting from external media, allowing attackers to bypass operating system security controls. These attacks can result in data exfiltration, credential theft, and further lateral movement within the environment.

Enforcing BitLocker across managed Windows devices is critical for compliance with data protection regulations and for reducing the risk of data breaches.

Remediation

Use Intune to enforce BitLocker encryption and monitor compliance across all managed Windows devices:

• Create a BitLocker policy for Windows devices in Intune
• Assign policies in Intune
• Monitor device encryption with Intune

Run it

The check runs as part of the whole assessment, with the ZeroTrustAssessment module installed:

Install-Module ZeroTrustAssessment -Scope CurrentUser
Connect-Maester
Invoke-Maester -Pack ZTA -SkipBuiltIn

Leave out -SkipBuiltIn to run Maester’s own checks in the same run.

About this check

Severity	High
Effort to fix	High
Impact on users	Low
Pillar	Devices
Category	Device management
Product	Intune
Feature	Endpoint security
Area	Devices and endpoints
ATT&CK	T1005 Data from Local System, T1006 Direct Volume Access
Licence	INTUNE_A
Tenant	Workforce

Product, feature, area and ATT&CK are Maester’s: the assessment does not record them, so Maester keeps them in the pack’s taxonomy.json.

A Microsoft check, part of the Zero Trust Assessment pack. Text from ZeroTrustAssessment 3.1.0, © Microsoft, MIT licence.