A Complete Guide to Choosing a CREST-Accredited Penetration Testing Company in Australia
Objective
Choosing among penetration testing companies in Australia is a security decision, not simply a price comparison. This guide explains how to assess CREST accreditation, tester expertise, testing scope, reporting, remediation and compliance support so you can choose a provider that fits your organisation.
Key Takeaways
- CREST accreditation provides independent assurance when assessing a penetration testing provider.
- Your provider should have experience with the systems and applications you need tested.
- Manual testing, clear reporting and practical remediation advice matter as much as automated tools.
- Always check the provider’s current accreditation and the scope of services it covers.
- A useful penetration test should help your team understand what needs fixing first.
Introduction
A penetration test is only as useful as the team performing it. If you are comparing penetration testing companies in Australia, choosing a provider based only on price can leave important questions unanswered.
Australia recorded 1,205 data breach notifications in 2025, the highest annual number since the mandatory reporting scheme began in 2018. Malicious or criminal activity accounted for 716 of those notifications.
Did you know? CREST states that its accredited companies are independently assessed against recognised requirements covering governance, service delivery, quality assurance and operational capability. Its Australia and New Zealand procurement guidance recommends independent accreditation and professional certification as part of supplier assurance.
So, how do you choose the right CREST Accredited Penetration Testing Company? Let’s break it down.
Table of Contents
- What Makes a Good Penetration Testing Company?
- Why CREST Accreditation Matters
- What Should You Compare?
- Check Testing Scope and Methodology
- Review Reporting and Retesting
- Final Selection Checklist
- FAQs
What Makes a Good Penetration Testing Company?
A strong provider should do more than run automated vulnerability scans. Penetration testing involves assessing whether security weaknesses can actually be exploited and what an attacker could achieve.
Look for experienced security professionals.
Check the qualifications and practical experience of the people who will perform your assessment. Borderless CS, for example, states that its security consultants hold CREST and OSCP certifications and use recognised testing methodologies.
Check for manual testing.
Automated tools can identify potential weaknesses, but experienced testers can manually assess applications and systems to find issues those tools may miss. A good provider should explain how manual testing forms part of its process.
Why CREST Accreditation Matters
CREST accreditation can give your procurement team an additional level of assurance when comparing Penetration Testing Companies.
CREST says accredited organisations are independently assessed for governance, service delivery, quality assurance and operational capability. It also provides a marketplace where organisations can search for accredited cybersecurity providers.
Verify the accreditation
Do not rely only on a logo displayed on a website. Check the provider through the current CREST Marketplace and confirm that the accreditation relates to the service you require. CREST also warns that CREST ANZ membership alone is not equivalent to CREST International accreditation.
What Should You Compare?
Before requesting a quote, compare providers using the same criteria.
What to checkWhat you should ask
Accreditation Is the provider currently CREST-accredited?
Expertise Who will conduct our test?
Scope Can you test our applications, APIs, networks or cloud systems?
Methodology How will the assessment be performed?
Reporting Will findings include evidence and business impact?
Remediation Will your team receive practical recommendations?
Retesting Can you confirm whether fixes have worked?
CREST provides guidance on how penetration tests should be scoped, delivered and signed off, so your procurement team should define these points before the engagement begins.
Check Testing Scope and Methodology
Your testing needs depend on your technology environment. A SaaS company may need application and API testing, while an enterprise may also require internal, external, cloud, mobile or wireless testing.
A provider such as Borderless CS lists web application, API, external and internal network, mobile, cloud, wireless, source code and AI penetration testing among its services.
The testing process should also be clear. It can include scoping, reconnaissance, manual testing, controlled exploitation, risk analysis and reporting, followed by remediation and retesting.
For Australian Government environments, current ASD guidance also recognises penetration testing as part of security assurance. The June 2026 ISM update added guidance recommending suitable AI models to augment vulnerability assessments and penetration tests.
Review Reporting and Retesting
The final report should help your security team decide what to fix first.
Look for:
- Executive summary
- Technical findings
- Risk ratings
- Evidence and screenshots
- Business impact
- Prioritised remediation advice
- Retesting after fixes
This is where a useful assessment becomes practical. You should finish the engagement knowing what was found, why it matters and what your team should address first.
Final Selection Checklist
Before choosing a provider, confirm:
Current CREST accreditation + qualified testers + suitable testing scope + manual testing + clear reporting + remediation guidance + retesting.
For government, regulated or enterprise environments, also consider your contractual, regulatory and security-framework requirements.
Choose Security Assurance, Not Just a Test
The right provider should give you more than a list of vulnerabilities. Your goal is to understand where your systems are exposed, what an attacker could achieve and which fixes deserve attention first.
If you need help assessing your testing requirements, Borderless CS offers a free cybersecurity consultation to discuss your environment, concerns and testing needs.
What is a CREST-accredited penetration testing company?
It is a cybersecurity provider that has been independently assessed against CREST requirements for areas such as governance, service delivery, quality assurance and operational capability.
How do I choose penetration testing companies in Australia?
Check CREST status, tester qualifications, testing scope, methodology, reporting, remediation support and retesting before making your decision.
Why is CREST accreditation important?
It provides additional supplier assurance because accredited organisations undergo independent assessment against recognised requirements.
What should a penetration testing report include?
A useful report should explain the findings, provide supporting evidence, assess business impact and give clear remediation priorities.
How often should penetration testing be performed?
The right frequency depends on your systems, risk and applicable requirements. Australian Government security guidance can require testing at defined points, including before deployment or significant changes for applicable systems.