EvidenceSheet
ACSC Essential Eight Maturity Model (November 2023) · Multi-factor authentication

MFA-ISM-1894 Multi-factor authentication used for authenticating users of data repositories is phishing-resistant

Multi-factor authentication used for authenticating users of data repositories is phishing-resistant. Required at Maturity Level Three of the Multi-factor authentication mitigation strategy (Appendix C); ISM control ISM-1894 in ASD's Essential Eight to ISM mapping (December 2023).

Source: ACSC Essential Eight Maturity Model (November 2023), MFA-ISM-1894. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open ACSC Essential Eight Maturity Model (November 2023) in the compliance library.

Each row is an ISM control the maturity model requires, with the maturity levels named in its text. Pick your target maturity level and use the rows for it.

2
artefacts
1
held by a system
1
at each review
easy
to go live
Identity provider / directory
where the evidence lives
teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

  • Configuration requiring phishing-resistant methods for data repository access · Identity provider / directory

periodic reviewEvidence produced at each review

  • Sample of repository sign-ins showing method · Identity provider / directory

governing documentDocuments that govern the control

none for this control

First move

Automate the pull from your Identity provider / directory. Scheduled export of users, roles and MFA state from the directory; access-review completion pulled from the IdP, not a spreadsheet.

Common gaps auditors find

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

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MFA-ISM-1893 Multi-factor authentication is used to authenticate users to third-party online customer services that… · MFA-ISM-1906 Event logs from internet-facing servers are analysed in a timely manner to detect cyber security events