Insights

Cyber security, in plain language.

Practical guidance on governance, compliance and risk for Australian government, councils and enterprise — written by practitioners, not marketers.

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ESS
Essential Eight7 min read

Essential Eight Maturity Level Three: Achieving and Sustaining It

Maturity Level Three is the highest tier of the Essential Eight and is built to resist adaptive, well-resourced adversaries. Reaching it is hard, sustaining it is harder.

KA
Ken Armitt
May 27, 2026
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Frameworks & standards we assess and advise against

Independent, vendor-neutral expertise across the Australian and international frameworks government, regulators and boards rely on.

E8
Essential Eight
ISO
ISO/IEC 27001
NIST
NIST CSF 2.0
CPS
APRA CPS 234 / 230
ISM
ACSC ISM
PSPF
PSPF
IRAP
IRAP readiness
SOC2
SOC 2
PCI
PCI DSS
NDB
Privacy Act / NDB
SOCI
SOCI Act