An Australian cyber security company

Complete securityat every layer.

Independent Australian cyber security consultancy helping organisations protect critical systems, strengthen resilience, and meet Australian security standards.

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Our services

What we do.

Cyber security services across every layer of your organisation.

01

Cyber Security Consulting

Understand, improve, and maintain your cyber security posture.

STRATEGY · ROADMAPS · ADVISORY
02

Governance, Risk & Compliance

Effective cyber security starts with strong governance.

RISK · GOVERNANCE · POLICY
03

Assessments & Assurance

Independent confidence that your security controls are working as intended.

POSTURE · IRAP · ASSURANCE
04

Managed Security Services

Ongoing operational and security support, tailored to your organisation.

MONITORING · SecOps · COMPLIANCE
05

Infrastructure Architecture & Implementation

Design, build and deploy secure, scalable, resilient infrastructure.

CLOUD · NETWORK · IAM
06

OT & Critical Infrastructure

Protect the operational technology and critical systems that essential services depend on.

OT · CRITICAL INFRA
07

Physical Security Systems Assessment

Independent security assessment of physical security systems, from access control to video management, assessed to ICT standards.

EACS · CCTV · VMS · KMS
Proudly Australian

100% Australian owned and operated.

We are an independent Australian cyber security consultancy. Our consultants understand Australian government frameworks, local regulations, and the challenges facing Australian organisations.

✓ Australian owned✓ Local experts✓ Government & Defence experience✓ IRAP registered assessors
Why CCircle

Experience where the stakes are highest.

Our team brings extensive experience delivering cyber security solutions across Government, Defence, Critical Infrastructure, and Enterprise environments.

We combine strategic advisory, technical expertise, and operational delivery capability to provide practical, outcome-focused security solutions that protect your organisation today while preparing for tomorrow's challenges.

Our mission

Helping build a cyber resilient Australia.

Our mission is to help build a cyber resilient Australia by strengthening the security posture of organisations across the public and private sectors.

We are committed to supporting Australia's Cyber Security Strategy and contributing to a safer, more secure digital future.

Let's strengthen your security.

A short conversation, no pitch deck. Tell us where you are, and we'll map a practical path forward.

Our services

Cyber security, end to end.

Cyber security services across every layer of your organisation.

01 · Cyber Security Consulting

We help organisations understand, improve, and maintain their cyber security posture.

We work alongside your team to develop achievable security outcomes that align with your business objectives.

  • Cyber security strategy and advisory
  • Security uplift roadmaps
  • Security architecture reviews
  • Compliance and regulatory guidance
  • Practical implementation support
02 · Governance, Risk & Compliance

Effective cyber security starts with strong governance.

We help organisations govern security with intent and keep risk within their appetite.

  • Identify and manage cyber security risks
  • Align security controls with business objectives
  • Meet regulatory and compliance requirements
  • Establish governance frameworks and security policies
  • Maintain risk levels within organisational risk appetite
03 · Security Assessments & Assurance

Independent assessments provide confidence that your security controls are operating effectively.

We provide independent assurance that your security controls are operating effectively, including across classified systems. Learn about our IRAP assessment services and evidence-based Essential Eight maturity assessments.

  • Security posture assessments
  • Vulnerability and risk assessments
  • Security assurance reviews
  • Cloud and application security assessments
  • Classified system assessments
  • IRAP assessment services
04 · Managed Security Services

Ongoing operational and security support, tailored to your organisation's requirements.

We help organisations maintain a secure, compliant, and resilient operating environment.

  • Security monitoring and management
  • Compliance management
  • Vulnerability management
  • Security operations support
  • Infrastructure and platform administration
  • Continuous security improvement
05 · Infrastructure Architecture & Implementation

We design, build, and deploy secure infrastructure solutions that support your operational and business requirements.

Every solution is designed with security, scalability, resilience, and operational efficiency in mind.

  • Secure infrastructure design
  • Cloud and hybrid environments
  • Network architecture
  • Identity and access management
  • System hardening and security configuration
  • Infrastructure deployment and migration services
06 · Operational Technology & Critical Infrastructure

Protect the operational technology and critical systems that essential services depend on.

We secure operational technology and critical infrastructure environments where safety, availability and resilience are paramount, aligned to Australia's critical infrastructure obligations.

  • OT security assessments
  • Critical infrastructure security reviews
  • IT and OT network segmentation
  • Secure architecture for OT environments
  • Risk assessment and mitigation
  • Security uplift programs
07 · Physical Security Systems Assessment

Physical Security Systems Assessment

Physical security systems are now networked ICT systems, and they are rarely governed like ICT systems. We provide independent assessment, gap analysis, architecture review and design review of physical security systems and their supporting infrastructure, assessed against the ISM, ACSC guidance and the manufacturer's published hardening guidance.

Learn more about physical security assessments
  • Electronic access control systems (EACS), including Gallagher, Lenel and Inner Range
  • Video management systems (VMS), including Milestone, Geutebrück and Avigilon
  • Security alarm, key management, perimeter detection and intercom systems
  • Architecture and design review

Not sure where to start?

Tell us about your environment and we'll recommend where to focus first.

About CCircle

Cyber security for Australian organisations.

CCircle is an independent Australian cyber security consultancy helping organisations protect what matters most. Founded on the belief that security should enable organisations, not hinder them, we partner with government, defence, critical infrastructure and enterprise to build secure, resilient and trusted digital environments.

IRAP
Assessors on our team
5
Core services
100%
Onshore & sovereign
ACSC · ASD
Aligned to guidance

Our team brings together cyber security consultants, assessors, architects, engineers, and governance and risk specialists who have delivered complex security programs across Australia's most security-conscious sectors. Every organisation is different, so our advice is practical, risk-based and tailored to your operational needs.

We believe security works best when it is built into every layer of an organisation, from strategy and governance through to secure infrastructure, managed services and ongoing improvement, helping clients make informed decisions that reduce risk while supporting business objectives.

Our work is guided by Australia's leading frameworks and standards, including the Australian Cyber Security Strategy 2023 to 2030, the Information Security Manual (ISM), the Essential Eight, the Protective Security Policy Framework (PSPF) and ISO/IEC 27001.

We don't just identify risks. We help you solve them.

Our mission is to strengthen Australia's cyber resilience through trusted expertise, practical solutions and long-term partnerships, so organisations can operate securely and confidently in an increasingly connected world.

We help our clients understand their cyber risks, prioritise them, and solve them, in support of Australia's Cyber Security Strategy and a safer digital future.

How we work

Four things we won't compromise on.

01 · Range

Strategy, assurance, operations and engineering, so advice doesn't get lost between the people who plan and the people who build.

02 · Rigour

Practical, evidence-based work, aligned to ACSC and ASD guidance and the standards that actually hold up.

03 · Sovereignty

Onshore, security-cleared people. Your data and findings stay in Australia.

04 · Outcomes

Security that works in practice and that a board can act on, not a report that sits on a shelf.

Let's strengthen your security.

From strategy to steady state, wherever you are, we can help.

Contact

Let's talk security.

Tell us a little about your organisation and what you're trying to achieve. We'll come back with how we can help and what it takes to get started.

Emailinfo@ccircle.com.auFastest way to reach the team.
Phone1300 045 483Mon–Fri, business hours AEST.
Privacy

Privacy Policy

Last updated June 2026

CCircle (Atta Mehlody Pty Ltd) respects your privacy and is committed to protecting the personal information you share with us. This policy explains what we collect, how we use it, and the choices you have. It applies to ccircle.com.au and to the services we provide.

Who we are

CCircle is the trading name of Atta Mehlody Pty Ltd, an independent Australian cyber security consultancy. If you have any question about your privacy, you can contact us at info@ccircle.com.au or on 1300 045 483.

Information we collect

We collect personal information that you choose to provide, mainly through our contact form. This may include your name, your email address, your phone number if you provide it, your organisation name if you provide it, the service you are interested in, and any details you include in your message.

We do not collect sensitive information through this website, and we ask that you do not send classified or security sensitive material through it. We do not use tracking cookies or third party analytics on this website.

How we use your information

We use the information you provide to respond to your enquiry and communicate with you, to discuss and provide our services, to keep a record of our correspondence, and to meet our legal and regulatory obligations. We do not sell your personal information, and we do not use it for advertising.

How your information is handled

When you submit the contact form, your details are processed by our form delivery provider and sent to our business email so that we can respond. Our website is hosted on a cloud platform, and our email is provided through Microsoft 365. These providers process data on our behalf, and some may store or process information on servers located outside Australia, including in the United States. Where this happens, we take reasonable steps to ensure your information is handled consistently with Australian privacy standards.

Storage and security

We take reasonable steps to protect personal information from misuse, loss, and unauthorised access or disclosure. We keep enquiry information only for as long as it is needed for the purpose it was collected, or as required by law, after which it is deleted or anonymised.

Access and correction

You may ask for access to the personal information we hold about you, and ask us to correct it if it is inaccurate or out of date.

Legal

Terms of Use

Last updated: 1 January 2026

By accessing this website you agree to these terms. If you do not agree, please do not use the site.

1. Use of this website

This website is operated by CCircle (Atta Mehlody Pty Ltd). Content is provided for general information only and does not constitute professional advice. You must not use this site for any unlawful purpose.

2. Intellectual property

All content on this site, including text, graphics, and logos, is the property of CCircle or its licensors and is protected by Australian and international copyright law. You may not reproduce or redistribute content without our written permission.

3. Accuracy of information

We strive to keep information on this website accurate and current, but we make no warranties about its completeness or suitability for any purpose. Reliance on any information is at your own risk.

4. Limitation of liability

To the extent permitted by law, CCircle is not liable for any loss or damage arising from your use of, or inability to use, this website or the information it contains.

5. Third-party links

This site may link to external websites. We have no control over and accept no responsibility for the content of those sites.

6. Governing law

These terms are governed by the laws of Victoria, Australia. Any disputes are subject to the exclusive jurisdiction of the courts of Victoria.

7. Changes

We may update these terms at any time. Continued use of the site following any changes constitutes acceptance of the updated terms.

Contact

Questions about these terms? Email info@ccircle.com.au.