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

MFA-ISM-1906 Event logs from internet-facing servers are analysed in a timely manner to detect cyber security events

Event logs from internet-facing servers are analysed in a timely manner to detect cyber security events. Required at Maturity Levels Two and Three of the Multi-factor authentication mitigation strategy (Appendices B and C); ISM control ISM-1906 in ASD's Essential Eight to ISM mapping (December 2023). ASD lists this event logging and incident requirement under Multi-factor authentication, so it is assessed for the events this strategy generates.

Source: ACSC Essential Eight Maturity Model (November 2023), MFA-ISM-1906. 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
2
held by a system
0
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

  • Detection rules analysing authentication events from internet-facing servers and services · Identity provider / directory
  • Alert triage records with timestamps · Identity provider / directory

periodic reviewEvidence produced at each review

none for this control

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.

Build my evidence sheet

MFA-ISM-1894 Multi-factor authentication used for authenticating users of data repositories is phishing-resistant · MFA-ISM-1907 Event logs from non-internet-facing servers are analysed in a timely manner to detect cyber security events