cis-gworkspace-4.1.1.3

DevOps & Security

Ensure 2-Step Verification (MFA) is enforced for all users

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4.1.1.3 Ensure 2-Step Verification (MFA) is enforced for all users

Profile Applicability

Enterprise Level 1

Description

Enforce 2-Step Verification (Multi-Factor Authentication) for all users.

Rationale

Add an extra layer of security to users accounts by asking users to verify their identity when they enter a username and password. 2-Step Verification (Multi-factor authentication) requires an individual to present a minimum of two separate forms of authentication before access is granted. 2-Step Verification provides additional assurance that the individual attempting to gain access is who they claim to be. With 2-Step Verification, an attacker would need to compromise at least two different authentication mechanisms, increasing the difficulty of compromise and thus reducing the risk.

Impact

Implementation of 2-Step Verification (multi-factor authentication) for all users will necessitate a change to user routine. All users will be required to enroll in 2-Step Verification using phone, SMS, or an authentication application. After enrollment, use of 2-Step Verification will be required for future access to the environment.

Audit

To verify this setting via the Google Workspace Admin Console:

Log in to https://admin.google.com as an administrator
Select Security
Select 2-Step Verification
Under Authentication, ensure Allow users to turn on 2-Step Verification is checked
Ensure Enforcement is set to On
Ensure New user enrollment period is set to 2 weeks
Under Frequency, ensure Allow user to trust device is not checked
Under Methods, ensure Any except verification codes via text, phone call is selected

Remediation

To configure this setting via the Google Workspace Admin Console:

Log in to https://admin.google.com as an administrator
Select Security
Select 2-Step Verification
Under Authentication, check Allow users to turn on 2-Step Verification
Set Enforcement to On
Set New user enrollment period to 2 weeks
Under Frequency, uncheck Allow user to trust device
Under Methods, select Any except verification codes via text, phone call
Select Save

Default Value

Allow users to turn on 2-Step Verification is checked
Enforcement is Off
New user enrollment period is None
Frequency - Allow user to trust device is checked
Methods is Any

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	6.3 Require MFA for Externally-Exposed Applications		x	x
v7	16.3 Require Multi-factor Authentication		x	x