Essential Eight

Also known as: E8, Essential 8, ACSC Essential Eight, Essential Eight Maturity Model

Essential Eight Maturity Model (Australian Signals Directorate) — ASD / ACSC (Australian Signals Directorate, Australian Cyber Security Centre)

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Eight mitigation strategies the Australian Signals Directorate treats as the baseline against targeted intrusion, graded across four maturity levels from zero to three. It is mandatory for Australian non-corporate Commonwealth entities and is the shorthand Australian buyers use when they ask a supplier how mature its security is. Each maturity level is defined as a set of Information Security Manual controls, so changes reach it through the directorate's quarterly manual releases, whose change notes say when a control's Essential Eight mapping moves.