Why the Essential Eight matters
The Essential Eight started as guidance for Australian government agencies, and it now flows into their supply chains, critical infrastructure and cyber insurance questionnaires. If you sell to government or work in a regulated sector, expect to be asked for your maturity level.
The eight strategies
The ASD groups the eight strategies by what they do: stop malware getting in and running, limit the damage if an attacker gets a foothold, and make sure you can recover.
| Strategy | What it covers |
|---|---|
| Prevent malware delivery and execution | |
| Application control | Only approved programs, scripts and installers can run |
| Patch applications | Security updates for browsers, Office, PDF readers and other software applied within set timeframes, and unsupported software removed |
| Configure Microsoft Office macro settings | Macros blocked unless there is a business need, and internet-sourced macros blocked |
| User application hardening | Browsers, Office and PDF software locked down so they can’t be used to run malicious content |
| Limit the extent of incidents | |
| Restrict administrative privileges | Admin access kept to the people who need it, on separate accounts that can’t browse the web or read email |
| Patch operating systems | Operating system updates applied within set timeframes, on supported versions only |
| Multi-factor authentication | MFA for online services, remote access and privileged users, moving to phishing-resistant methods at higher levels |
| Recover data and availability | |
| Regular backups | Backups of important data and settings, protected from deletion or change, with restores tested |
The four maturity levels
Each maturity level is built to stop a more capable attacker. The requirements are cumulative: to reach Level Two, a strategy must meet everything in Level One as well. The model is written for Windows-based, internet-connected networks, and the ASD recommends reaching the same level across all eight strategies before aiming higher. Most buyers read your overall maturity as your weakest strategy.
- Requirements of Level One not met LevelZero
- Stops opportunistic attackers using commodity tools LevelOne
- Stops attackers investing more time and better tools in you LevelTwoMost often required
- Stops adaptive, targeted attackers LevelThree
Less capable attackerMore capable attacker
| Level | Built to stop | What it typically looks like |
|---|---|---|
| Zero | Nothing reliably: the requirements of Level One are not met | Gaps an attacker could exploit with little effort, such as unpatched internet-facing systems or no MFA |
| One | Opportunistic attackers using commodity, widely available tools and techniques | Patches applied on a schedule, faster for internet-facing systems; MFA on online services; internet macros blocked; admin rights limited; backups that are tested |
| Two | Attackers willing to invest more time and more effective tools in targeting you, for example to steal credentials | Wider application control and MFA coverage, privileged access reviewed and separated, tighter hardening, and logging of key security events |
| Three | Adaptive, targeted attackers who are less reliant on public tools and move quickly on new weaknesses | Application control on servers as well as workstations, phishing-resistant MFA, the fastest patching windows, and centralised logs that are actively monitored |
Non-corporate Commonwealth entities must reach Level Two, and that is the level government buyers most often ask their suppliers for. Level Three is usually reserved for organisations that are likely targets of capable attackers.
Assessed, not certified
There is no Essential Eight certificate, and no one is accredited to issue one. You either self-assess or have an independent assessor test your controls, usually following the ASD’s Essential Eight Assessment Process Guide, and report the maturity level you reached. An independent assessment carries more weight with buyers because the evidence has been tested, not just described.
Cyber Veda does both sides of the work: we assess your maturity with evidence, and we help you lift the strategies that fall short. Assessment and uplift are kept separate, so the person rating your maturity is never marking their own work.
If you do ISO 27001 first
ISO 27001 and the Essential Eight overlap in what they cover, but not in how much detail they demand. ISO 27001 gives you the management system: governance, risk assessment, an asset inventory, policies, internal audit and the habit of keeping evidence. The Essential Eight then asks for specific technical settings and timeframes that ISO 27001 leaves to your own risk decisions.
| Essential Eight strategy | Related ISO 27001:2022 Annex A controls | What the Essential Eight adds |
|---|---|---|
| Application control | 8.19 Installation of software, 8.7 Protection against malware | Enforced allowlisting, not just a policy on what can be installed |
| Patch applications | 8.8 Management of technical vulnerabilities | Fixed patching timeframes and removal of unsupported software |
| Office macro settings | 8.7 Protection against malware, 8.9 Configuration management | Specific macro settings, applied and locked |
| User application hardening | 8.9 Configuration management | Specific browser, Office and PDF hardening settings |
| Restrict administrative privileges | 8.2 Privileged access rights, 5.15 Access control | Separate admin accounts with no web or email, and regular revalidation |
| Patch operating systems | 8.8 Management of technical vulnerabilities | Fixed timeframes and supported operating system versions only |
| Multi-factor authentication | 8.5 Secure authentication, 5.17 Authentication information | Defined MFA coverage, phishing-resistant at higher levels |
| Regular backups | 8.13 Information backup | Restore testing and protection of backups from deletion or change |
So the extra effort after ISO 27001 is mostly technical: configuring endpoints, identity and patching tools to the required settings, then producing the evidence to prove it. For a cloud-first business on managed devices, Level One is often within reach; Levels Two and Three usually take real engineering. If you plan both together, we build the ISO 27001 controls so they already meet your target maturity level, and the evidence counts twice.
What's included
- Agreed target maturity level, based on what your customers or contracts require
- Assessment of each of the eight strategies, with the evidence behind every rating
- Clear findings in plain English, not just a scorecard
- Mapping to the ISO 27001 controls you already run, or plan to
- Prioritised uplift roadmap, quick wins first
When you'd use this
- A government tender or contract asks for your Essential Eight maturity
- Your board or cyber insurer wants a clear picture of your technical defences
- You are working towards ISO 27001 and want the technical controls in good shape too
