Details
You can configure this setting to specify a minimum password length for device passwords. Long passwords can provide increased security. However, long passwords can decrease device usability.
Rationale:
Types of password attacks include dictionary attacks that use common words and phrases, and brute force attacks that use character combinations. Attackers also sometimes try to obtain an account database so they can use tools to discover accounts and passwords.
Solution
To implement the recommended state, execute the following PowerShell cmdlet:
Set-MobileDeviceMailboxPolicy default -MinPasswordLength 4
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Identification and Authentication.This control applies to the following type of system Windows.