EvidenceSheet
ACSC Essential Eight Maturity Model (November 2023) · Regular backups

BACKUP-ISM-1708 Backup administrator accounts are prevented from modifying and deleting backups during their retention period

Backup administrator accounts are prevented from modifying and deleting backups during their retention period. Required at Maturity Level Three of the Regular backups mitigation strategy (Appendix C); ISM control ISM-1708 in ASD's Essential Eight to ISM mapping (December 2023).

Source: ACSC Essential Eight Maturity Model (November 2023), BACKUP-ISM-1708. 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
0
at each review
easy
to go live
Backup / DR tooling
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

  • Retention lock configuration · Backup / DR tooling

periodic reviewEvidence produced at each review

none for this control

governing documentDocuments that govern the control

  • Immutability or retention lock preventing backup administrators modifying or deleting backups during retention · Policy repository / GRC workspace

First move

Automate the pull from your Backup / DR tooling. Backup job success history and restore-test logs from the backup platform.

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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BACKUP-ISM-1707 Privileged user accounts (excluding backup administrator accounts) are prevented from modifying and deleting… · BACKUP-ISM-1810 Backups of data, applications and settings are synchronised to enable restoration to a common point in time