Strengthen Your Cyber Defences with the ACSC's Essential Eight
The Australian Cyber Security Centre (ACSC) recommends the Essential Eight as a baseline for organisations to mitigate cybersecurity incidents. Implementing these strategies makes it significantly harder for adversaries to compromise systemsWhat is the Essential Eight?
The Essential Eight comprises eight mitigation strategies designed to protect against a range of cyber threats:- Application Control Prevent unapproved applications from executing on your systems.
- Patch Applications Ensure applications are up-to-date to mitigate vulnerabilities.
- Configure Microsoft Office Macro Settings Restrict macros to prevent malicious code execution.
- User Application Hardening Configure applications to reduce exploitable vulnerabilities.
- Restrict Administrative Privileges Limit admin privileges to reduce the impact of attacks.
- Patch Operating Systems Keep operating systems updated to protect against known threats.
- Multi-Factor Authentication Implement MFA to add an extra layer of security.
- Regular Backups Perform regular backups to ensure data recovery in case of incidents.
Our Approach to Implementing the Essential Eight
At Mercury IT, we tailor the implementation of the Essential Eight to your organisation's specific needs:- Assessment: Our assessors will evaluate your current cybersecurity posture against the Essential Eight maturity model.
- Planning: Develop a roadmap to achieve the desired maturity level across all eight strategies.
- Implementation: Deploy necessary controls and configurations to align with the Essential Eight.
- Monitoring: Continuously monitor and adjust strategies to maintain compliance and effectiveness.
Why Choose Mercury IT?
- Expertise: Our assessors have completed the ASD-designed Essential Eight Assessors course, and our team has extensive experience in cybersecurity consulting and implementation.
- Custom Solutions: We provide tailored strategies that align with your business objectives.
- Compliance Focused: Ensure your organisation meets industry standards and regulatory requirements.
Get Started
Enhance your cybersecurity posture by implementing the Australian Cyber Security Centre's Essential Eight. Contact us today to schedule a consultation.FAQs
The Essential Eight is a set of eight foundational cybersecurity strategies developed by the Australian Cyber Security Centre (ACSC). It is widely regarded as the most effective, prioritised baseline for Australian businesses to protect themselves from common cyber threats including ransomware and data breaches. The framework is mandatory for Australian federal government agencies under the Protective Security Policy Framework (PSPF) and is now considered best practice for all Australian organisations. Mercury IT specialises in Essential Eight implementation and assessment.
The Essential Eight framework comprises two groups of controls. The first group prevents attacks from succeeding: Application Control (only approved software can run), Patch Applications (keep software updated), Configure Microsoft Office Macros (block malicious macros), and User Application Hardening (disable risky features in browsers and Office). The second group limits the impact of attacks: Restrict Administrative Privileges (minimise admin access), Patch Operating Systems (keep Windows and other OS updated), Multi-Factor Authentication (require multiple forms of identity verification), and Regular Backups (maintain recoverable copies of data).
Essential Eight is mandatory for all 98 Australian federal government non-corporate Commonwealth entities (NCCEs) under the Protective Security Policy Framework. Beyond government, Essential Eight has become the de facto security standard for Australian businesses. Implementing Essential Eight is critical for demonstrating due diligence, is often required for cyber insurance eligibility and favourable premiums, and is increasingly necessary for winning contracts with government agencies and large enterprises. Many industry regulators now reference Essential Eight as the expected security baseline.
The ACSC defines four maturity levels (0 to 3) to measure implementation effectiveness. Maturity Level 0 indicates controls are ineffective or non-existent. Maturity Level 1 represents partially implemented controls and is the minimum baseline. Maturity Level 2 indicates mostly implemented and effective controls—this is the mandatory target for Australian government entities and the recommended target for most organisations. Maturity Level 3 represents fully implemented, tested, and automated controls appropriate for high-risk environments. Mercury IT assesses your current maturity level and creates a roadmap to your target level.
The primary benefit is a significant, measurable reduction in cyber risk. The ACSC designed these eight controls specifically because they mitigate the majority of real-world attacks targeting Australian organisations. Additional benefits include improved business resilience during security incidents, easier compliance with other frameworks that reference Essential Eight, potential for reduced cyber insurance premiums, and demonstrated security commitment to partners, customers, and regulators. Mercury IT delivers Essential Eight implementation that provides genuine protection, not just compliance checkboxes.
Mercury IT has assessors who have completed the official Essential Eight Assessment Course designed by the Australian Signals Directorate's Australian Cyber Security Centre and delivered by TAFEcyber. Our assessments follow the Essential Eight Assessment Guidance Package and Maturity Model to accurately evaluate your current maturity level across all eight controls. We provide detailed findings for each control, identify gaps preventing you from reaching your target maturity level, and deliver a prioritised remediation roadmap with practical implementation guidance.
