Security
Essential Eight for small business
What the ACSC Essential Eight maturity model means in practice — and a realistic path for Melbourne SMEs.
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What the Essential Eight is
The Australian Cyber Security Centre’s Essential Eight is a prioritised list of mitigation strategies — patch applications and OS, restrict admin rights, configure Office macros, application control, restrict Microsoft Office, user application hardening, MFA, and daily backups. Maturity levels show how consistently you apply them.
Start where attackers start
For most small businesses, the highest return is patching, MFA on every account, restricted admin, and tested backups. Email authentication (SPF, DKIM, DMARC) and modern antivirus or EDR close the next biggest gaps. You do not need maturity level three everywhere on day one.
Microsoft 365 mapping
Conditional access, enforced MFA, disabling legacy auth, and Defender policies cover large parts of the identity and hardening controls. Document approved apps and admin roles. Pair cloud settings with device compliance via Intune or equivalent MDM.
Realistic roadmap
Quarter one: MFA, backups with restore test, and patch cadence. Quarter two: admin separation, macro policies, and email filtering. Quarter three: application control where feasible and independent security review. Track progress in plain language leadership can follow.
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Common questions
What is the Essential Eight for small business?
The ACSC Essential Eight is a prioritised set of cyber controls (patching, MFA, backups, admin restrictions, and more). SMEs should start with MFA, patching, and tested backups. See mrtechmelbourne.com/guides/essential-eight-small-business
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