Essential Eight MF-ML2.1 Multi-factor authentication for privileged users of systems
What it says
Multi-factor authentication is used to authenticate privileged users of systems.
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What it means
In plain EnglishEnsure privileged users use more than just a password to access systems.
This control ensures that users with special access rights, like IT staff, use more than just a password to access important systems. It's like adding a second lock to your front door; even if a thief copies your key (or password), they won't get in without the second key. Without it, hackers could easily take over systems and steal sensitive information.
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Why it matters
Without MFA, attackers can hijack privileged accounts, potentially leading to full system control and catastrophic data breaches.
How to implement
IT team should enable multi-factor authentication for all privileged accounts by configuring it in the system settings and training users on its use.
System administrator should regularly review privileged accounts to ensure multi-factor authentication is consistently applied by checking system logs for compliance.
Security officer should choose strong authentication methods like security tokens or mobile authenticator apps, implementing them through a vendor-provided solution.
IT support should be available to assist users in setting up multi-factor authentication on their devices, providing clear step-by-step instructions and support contacts.
Management should communicate the importance of multi-factor authentication to all privileged users, explaining its role in protecting organisational data and encouraging compliance.
Keep it running
Review MFA sign-in logs for privileged accounts, alert on failed prompts, and ensure all new admin accounts are enrolled in MFA immediately.
Evidence and audit
- Check 1 of 2What an auditor asks for
Ask for
How is multi-factor authentication implemented for privileged users?
Look at
Examine system settings documentation, user account policies, and technical configurations.
Good evidence
Documentation shows multifactor setup for privileged users and technical settings confirm compliance.
- Check 2 of 2What an auditor asks for
Ask for
Are there logs that show multi-factor authentication usage for privileged users?
Look at
Review system access logs and audit trails for evidence of multi-factor authentication events.
Good evidence
Logs clearly indicate that multi-factor authentication is used extensively by all privileged users.
Mappings
Closest match in ASD Information Security Manual: ISM-1173, Multi-factor authentication for privileged human users of systems, which asks for the same thing.
ISO/IEC 27001: 3 mappings
This control partially meets A.8.2.
E8-MF-ML2.1 requires MFA to authenticate privileged users of systems. ISO/IEC 27001:2022 Annex A 8.2 requires privileged access rights to be restricted and managed, and MFA is a key mechanism that strengthens control over the use of those rights. Annex A 8.2 covers broader privileged access governance (allocation, restriction, and ongoing management) beyond authentication, while E8-MF-ML2.1 focuses specifically on stronger authentication for privileged users.
This control partially meets A.8.5.
E8-MF-ML2.1 requires MFA for privileged users accessing systems. ISO/IEC 27001:2022 Annex A 8.5 requires secure authentication technologies and procedures to be implemented based on access restrictions and policy, which can include MFA but is not limited to it. E8-MF-ML2.1 is a specific instantiation of the broader authentication control in Annex A 8.5 focused on privileged authentication strength.
This control partially overlaps A.5.17.
Annex A 5.17 addresses establishing a management process for allocating and protecting authentication information and advising personnel on its handling. E8-MF-ML2.1 relates by mandating multi-factor authentication for privileged users, affecting how authentication factors are managed.
ASD Information Security Manual: 3 mappings
This control is equivalent to ISM-1173.
E8-MF-ML2.1 requires multi-factor authentication (MFA) to be used to authenticate privileged users of systems. ISM-1173 states the same requirement for privileged users, with matching scope (privileged access) and control intent (MFA enforced). Implementing ISM-1173 would largely satisfy E8-MF-ML2.1 and vice versa.
This control supports ISM-1919.
ISM-1919 requires disabling authentication protocols that do not support MFA whenever MFA is used, reducing the risk privileged users can authenticate without MFA via legacy methods. This supports E8-MF-ML2.1 by ensuring MFA for privileged system access is enforced and not undermined by alternative protocols that permit single-factor authentication. E8-MF-ML2.1 focuses on requiring MFA for privileged users, while ISM-1919 focuses on disabling non‑MFA protocol options.
This control depends on ISM-1401.
ISM-1401 defines what counts as MFA by specifying valid factor pairings involving possession and knowledge/inherence. E8-MF-ML2.1 requires MFA for privileged users of systems, and ISM-1401 supports that requirement by constraining acceptable MFA implementations. E8-MF-ML2.1 addresses who must use MFA (privileged users), whereas ISM-1401 addresses the MFA factor model.
ASD Essentials for enterprise IT: 1 mapping
- IT.PRO-13.4Enforce phishing-resistant MFA for all user authentication, including from untrusted locationsPartially overlaps
This control partially overlaps IT.PRO-13.4.
IT.PRO-13.4 requires phishing-resistant MFA for users authenticating to systems, including from untrusted, external or high-risk locations; E8-MF-ML2.1 requires MFA for privileged users of systems, covering privileged users without itself requiring phishing resistance.
Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.