Why ISO 27001 Auditing Is Worth Pursuing Right Now
Information security has moved from a back office concern to a boardroom priority. Organisations across every sector are facing increased regulatory scrutiny, growing cyber threats, and customer demands for demonstrable security assurance. ISO 27001 is the internationally recognised standard for information security management systems, and demand for qualified auditors who can assess conformance to it is growing steadily across Australia and globally.
On this page
If you are a quality manager, IT professional, compliance officer, or practising auditor looking to expand into information security, becoming an ISO 27001 information security auditor is a practical and well compensated career move. This article walks through what the role actually involves, what credentials and experience you need, and how to build your path from where you are now.
What Does an ISO 27001 Auditor Actually Do?
Before committing to a career path, it helps to understand what the job looks like in practice. An ISO 27001 auditor assesses whether an organisation’s Information Security Management System (ISMS) meets the requirements of the standard. That means examining documented information, interviewing personnel, reviewing technical controls, and testing whether the system is actually functioning as intended rather than just sitting in a folder.
The role splits across three main contexts.
Internal Auditor
An internal ISO 27001 auditor works within an organisation to assess its own ISMS. This is a requirement under Clause 9.2 of the standard. Internal auditors check whether the system conforms to the standard and to the organisation’s own policies and procedures. They report findings to management and support corrective action. This is typically the entry point for most people moving into ISO 27001 auditing.
Second Party Auditor
A second party auditor assesses a supplier or partner organisation on behalf of their own employer. This is common in sectors where data handling by third parties creates significant risk, such as financial services, healthcare, and government. If you work in procurement, vendor management, or IT security, you may already be doing elements of this work without the formal audit credential behind it.
Third Party or Certification Auditor
Third party auditors work for accredited certification bodies and conduct formal certification, surveillance, and recertification audits. This is the most demanding role and requires the most experience. Certification bodies typically require you to hold a recognised lead auditor qualification, demonstrate a portfolio of completed audits, and pass a technical competence evaluation before they will employ you in this capacity.
Exemplar Global Recognised Training ProviderRTP No. 310970
Understanding the ISO 27001 Standard Before You Audit It
You cannot audit a standard you do not understand. ISO 27001:2022 is the current edition and it differs meaningfully from the 2013 version. If you trained on the older edition, you will need to update your knowledge before auditing against the current requirements.
The standard uses the Harmonised Structure shared by ISO 9001, ISO 14001, ISO 45001, and other management system standards. Clauses 4 through 10 cover the management system requirements. Annex A provides a reference set of 93 information security controls organised into four themes: organisational controls, people controls, physical controls, and technological controls.
As an auditor, you need to understand not just what each clause requires but how the clauses connect. The risk assessment under Clause 6.1.2 drives the risk treatment plan under Clause 6.1.3, which in turn determines which Annex A controls are applicable and which are excluded. The Statement of Applicability documents all of this. When you audit an ISMS, you are tracing that logic from one end to the other, checking that the decisions made are defensible and that the controls selected are actually implemented.
If you already audit ISO 9001, ISO 14001, or ISO 45001, you will find the management system framework familiar. What is different about ISO 27001 is the technical depth of Annex A and the need to understand concepts like access control, cryptography, incident management, and secure development. You do not need to be a penetration tester or a network engineer, but you do need enough technical literacy to ask meaningful questions and recognise when an answer does not stack up.
The Qualification Pathway to ISO 27001 Auditor
There is a clear progression of training levels for ISO 27001 auditing. Understanding which level you need depends on what role you are aiming for.
Foundation Level
A foundation course introduces the structure and key concepts of ISO 27001 without going deep into auditing technique. It is useful if you are new to the standard and want to build a baseline of knowledge before progressing. It is not a standalone auditing credential.
Internal Auditor Level
An ISO 27001 internal auditor course teaches you how to plan, conduct, report, and follow up an internal audit of an ISMS. It covers audit principles, audit process, and the specific requirements of ISO 27001. Completing a recognised internal auditor course qualifies you to conduct internal audits within your own organisation and, with sufficient logged audit experience, supports your progression toward lead auditor status.
This is the right starting point if you are a quality manager, IT manager, compliance professional, or security officer who needs to run internal ISMS audits or support your organisation through certification.
Lead Auditor Level
A lead auditor course is a five day intensive program that covers everything in the internal auditor course plus the skills needed to plan and lead full audit programmes, manage audit teams, conduct opening and closing meetings, and report findings to senior stakeholders. Recognised lead auditor courses are assessed through a written examination and are accredited by bodies such as Exemplar Global or IRCA.
Completing a lead auditor course and passing the exam earns you a certificate of attainment. To progress to formal auditor certification with Exemplar Global or IRCA, you then need to log a qualifying portfolio of audit experience, which typically includes a minimum number of completed audits conducted under the supervision of a certified lead auditor. For a detailed look at how these two certification schemes compare, see our article on Exemplar Global vs IRCA Certification.
What Background Do You Need Before Starting?
ISO 27001 auditor training does not require a computer science degree or a background in cybersecurity. What it does require is some professional experience and a willingness to engage with technical subject matter.
Most people who pursue ISO 27001 auditor credentials come from one of these backgrounds.
- Quality or compliance professionals who already hold auditor credentials in ISO 9001, ISO 14001, or ISO 45001 and want to add information security to their scope.
- IT managers or security professionals who understand the technical side of information security and want to formalise their ability to assess it against a recognised standard.
- Risk and governance professionals who work in areas like internal audit, enterprise risk management, or regulatory compliance and want to extend their skills into ISO 27001.
- Management system consultants who help organisations implement and maintain management systems and want to offer ISMS implementation and internal audit services.
If you are already an auditor in another discipline, your existing audit skills transfer directly. You understand how to gather evidence, write nonconformities, conduct interviews, and manage an audit day. What you need to add is ISO 27001 specific knowledge. If you are coming from an IT background, the reverse is true. You understand the technical controls but may need to develop your audit methodology and documentation skills.
Building Audit Experience in ISO 27001
Training gives you knowledge. Experience gives you competence. The gap between the two is where most people get stuck, and it is worth thinking about this before you start your training so you have a plan.
Start With Internal Audits
If your organisation has an ISMS, the most direct path to experience is conducting internal audits within it. Talk to your information security manager or CISO about taking on the internal audit function. Even if the ISMS is not yet certified, running audits against the standard builds your evidence base and develops your judgement.
Volunteer for Audit Teams
If you work in a larger organisation or a consulting firm, ask to join audit teams as an observer or team member before taking on audit leadership. Watching an experienced lead auditor work through a clause by clause assessment of an ISMS is worth more than most training exercises.
Log Everything
Whether you are working toward Exemplar Global or IRCA certification, you will need to demonstrate a portfolio of completed audits. Start keeping an audit log from your first audit. Record the organisation type, the scope, the clauses covered, your role, the duration, and the outcome. Certification schemes have specific requirements for what counts, so check the current requirements of your chosen scheme before you start and log accordingly. For more detail on this, our article on witness audits and audit logs for certification is worth reading.
Seek Witness Audits
Most certification schemes require at least one witness audit, where a certified auditor observes you conducting an audit and assesses your competence. Plan for this early. If you are working toward certification body employment, the certification body itself will typically arrange a witness audit as part of their competence evaluation process.
Technical Knowledge Areas You Need to Develop
ISO 27001 auditing requires you to engage with technical subject matter that does not appear in quality or environmental auditing. You do not need to be a technical expert, but you need enough literacy to audit effectively. The following areas come up consistently in ISMS audits.
Access Control and Identity Management
Controls 5.15 to 5.18 in Annex A cover access control, identity management, authentication, and access rights management. You need to understand what these controls are asking for and be able to ask questions that test whether they are implemented. Can the organisation show you its access control policy? Can they demonstrate how access rights are reviewed and revoked when someone leaves? These are auditable questions that do not require technical expertise to ask.
Information Security Risk Assessment
The risk assessment process under Clause 6.1.2 is the engine of the ISMS. You need to understand how organisations identify information assets, assess threats and vulnerabilities, evaluate risk, and document their methodology. You are not conducting the risk assessment yourself. You are auditing whether the organisation’s process is repeatable, documented, and connected to their treatment decisions.
Incident Management
Controls 5.24 to 5.28 cover information security incident management. In practice, you are asking whether the organisation has a defined process for detecting, reporting, and responding to incidents, whether staff know what to do, and whether past incidents have been reviewed and learned from. This is familiar territory for anyone who has audited ISO 45001 incident investigation requirements.
Supplier and Third Party Security
Annex A includes controls on supplier relationships and ICT supply chain security. Organisations increasingly rely on cloud services, managed service providers, and outsourced IT functions. Auditing these controls means checking whether supplier security requirements are defined in contracts, whether suppliers are assessed, and whether the organisation monitors third party security performance.
Career Options for ISO 27001 Auditors
Once you hold a recognised ISO 27001 auditor qualification and have built a portfolio of audit experience, several career paths open up.
In House ISMS Auditor or Compliance Manager
Many medium and large organisations employ internal auditors with ISO 27001 credentials to manage their internal audit programme and support certification. This is a stable employment path, particularly in sectors with strong regulatory drivers for information security such as financial services, healthcare, government, and critical infrastructure.
Certification Body Auditor
Certification bodies employ lead auditors to conduct third party certification, surveillance, and recertification audits. ISO 27001 auditors are in demand at certification bodies because the standard is growing in uptake and requires specific technical knowledge. Employment with a certification body typically offers regular travel, varied client exposure, and a structured competence development programme.
Independent Consultant and Auditor
Experienced ISO 27001 auditors can work independently, offering a combination of ISMS implementation consulting, internal audit services, and pre certification gap assessments to clients. This path requires business development skills alongside technical competence, but it offers flexibility and the ability to command strong day rates. For context on what this looks like financially, our article on ISO auditor salary in Australia covers current market rates across employment and contracting arrangements.
Adding ISO 27001 to an Existing Auditor Scope
Many practising auditors add ISO 27001 to an existing scope that already includes ISO 9001, ISO 14001, or ISO 45001. This is a practical approach because you already have the audit methodology and the management system knowledge. Adding ISO 27001 means learning the standard specific requirements and Annex A controls, completing a recognised training course, and building a portfolio of ISMS audits. Auditors who can cover multiple standards are attractive to both certification bodies and consulting clients.
Choosing the Right ISO 27001 Training Course
Not all ISO 27001 training is equal. When evaluating a course, look for the following.
- Recognised accreditation. Courses accredited by Exemplar Global or IRCA carry weight with employers and certification bodies. A certificate from an unaccredited provider may be of limited value when you are trying to demonstrate competence to a potential employer or apply for auditor registration.
- Examination assessment. A recognised lead auditor course includes a written examination. If a course does not assess you, it is not a lead auditor course regardless of what it is called.
- Practical audit exercises. The best courses include role play audit scenarios, nonconformity writing practice, and document review exercises. These develop the skills you actually need on the job.
- Trainer experience. Check whether the trainer has actual ISO 27001 audit experience. Training delivered by someone who has conducted real ISMS audits is substantially more useful than training delivered by someone who has only studied the standard.
For a broader look at what to consider when selecting a training provider, our article on what to look for when choosing an ISO training provider covers the key questions to ask before you enrol.
Exemplar Global Recognised Training ProviderRTP No. 310970How Long Does It Take to Become an ISO 27001 Auditor?
The timeline depends on your starting point and the role you are aiming for.
If you are starting from scratch with no prior auditing experience, a realistic path to being qualified as an internal auditor takes around two to four weeks of study and a short course. Progressing to lead auditor qualification takes a five day course plus examination. Building the audit portfolio needed for formal Exemplar Global or IRCA certification typically takes twelve to twenty four months of active auditing after completing the course.
If you already hold auditor credentials in another ISO standard, the path is shorter. You already have the audit methodology. You need the ISO 27001 specific knowledge and a portfolio of ISMS audits. Many experienced auditors complete the lead auditor course and begin logging ISMS audits within months of completing it.
The most important thing is to start. The audit experience does not accumulate until you begin conducting audits, and the sooner you start, the sooner you build the portfolio that supports formal certification.
Starting Your ISO 27001 Auditor Journey With Audit Workshop
Audit Workshop delivers practical, accredited auditor training for people who want real skills, not just a certificate. If you are ready to build your ISO 27001 auditing credentials, the right starting point depends on where you are now. Those new to auditing or to the standard benefit from the internal auditor course. Experienced auditors ready to lead ISMS audits should consider the lead auditor course.
All Audit Workshop courses are built around practical audit scenarios and delivered by trainers with genuine field experience. If you want to understand what is involved before committing, explore the course options at auditworkshop.com or get in touch to discuss which level fits your background and goals.
