Top 5 Penetration Testing Companies in Australia
1. Borderless CS – CREST-Accredited Penetration Testing with Strong Governance Focus.
Headquarters: Melbourne, Australia
Key credentials:
- CREST International & CREST ANZ–recognised penetration testers Borderless CS
- ISO 27001:2022, ISO 9001:2015, ISO 45001:2018 and SOC 2 Type II (as provided by the company)
- 100% onshore Australian and Fijian delivery teams (no offshore hand-offs)
Borderless CS is a specialist cybersecurity company with a strong focus on offensive security and security governance. Its penetration testing practice combines CREST-aligned methodologies with pragmatic, business-focused reporting.
Core penetration testing services (examples):
- Web and mobile application penetration testing
- External and internal network penetration testing
- Cloud security assessments (AWS, Azure, GCP)
- Red teaming, social engineering and phishing simulations
- Secure code review and API security testing
- Post-test remediation support and re-testing
Borderless CS is particularly suited to:
- Regulated sectors (healthcare, financial services, critical infrastructure, government)
- Organisations seeking alignment to Essential Eight, ISO 27001 and NIST CSF
- Medium and large enterprises that want a partner who can provide both deep testing and ongoing advisory (e.g. SOC/MDR, GRC, cyber insurance readiness)
If you are looking for an Australian partner that combines penetration testing with broader security strategy and compliance support, Borderless CS is a strong contender.
2. KPMG Australia – Enterprise-Grade Penetration Testing & Cyber Advisory
KPMG is one of the largest consulting and assurance firms in Australia, offering a mature cybersecurity practice encompassing penetration testing, red teaming, cloud security reviews, and cyber risk assessments.
Strengths:
- Large national team with enterprise consulting capabilities
- Strong presence across government, ASX-listed companies and major institutions
- Offers offensive security integrated with governance, risk, audit, and strategy
Best suited for complex, large-scale organisations requiring penetration testing with audit-level documentation and assurance.
3. PwC Australia – Offensive Security with Strong Governance Alignment
PwC offers advanced penetration testing as part of its broader Cyber, Risk & Digital Trust business unit. Their penetration testing teams support application, infrastructure, OT, and cloud security testing.
Capabilities:
- Red teaming, scenario-based adversarial simulation
- Application and API penetration testing
- Cloud and hybrid environment testing
- Integration with cyber risk, privacy, and audit functions
Ideal for large organisations seeking a globally recognised provider with strong alignment with compliance and business risk.
4. Deloitte Australia – Comprehensive Offensive Security & Red Team Services
Deloitte operates one of Australia’s largest cybersecurity practices, offering deep penetration testing and offensive security services through its Global Cyber network.
Key strengths:
- Sophisticated red teaming and adversary emulation
- Cloud and DevSecOps-focused penetration testing
- Global methodologies aligned to NIST, MITRE ATT&CK, and OWASP
- Strong industry experience across financial services, healthcare, government, and critical infrastructure
Recommended for enterprises requiring highly structured, methodical penetration testing with strong global backing.
5. EY Australia – Application & Infrastructure Penetration Testing at Scale
EY provides penetration testing and ethical hacking services across its cybersecurity and technology consulting divisions. Their offensive security team supports large enterprises, public sector agencies, and national infrastructure operators.
Highlights:
- Application and infrastructure penetration testing
- Secure code reviews, API testing, and cloud assessments
- Red team and purple team operations
- Integration with EY’s advisory, risk, and compliance frameworks
EY is a solid choice for large organisations seeking penetration testing combined with broad operational, audit, and compliance support.
How to choose the right penetration testing company in Australia
With many “penetration testing companies in Australia” to choose from, here are practical criteria you can use to shortlist and decide:
Accreditation and certifications
- Look for CREST-approved organisations or CREST-certified testers as a baseline for technical competency and ethical standards.
- Check for ISO 27001, SOC 2, GDPR and similar certifications where relevant to your industry.
Relevant industry experience
- Ask for case studies or references in your sector (e.g. healthcare, financial services, government, critical infrastructure).
- Confirm that the provider understands your regulatory context (e.g. Australian Privacy Act, APRA CPS 234, sector-specific obligations, or Pacific Island regulators if you operate regionally).
Depth of methodology – not just scanning
- Clarify how they combine automated tools with manual testing, exploit development and attack chaining.
- Ask if their methodology aligns with recognised standards (e.g. OWASP, NIST) and if they can adapt to your risk appetite and testing objectives.
Quality of reporting and remediation support
- Request sample or redacted reports.
- Look for clear risk ratings, business-impact explanations, and concrete remediation steps rather than just raw vulnerability lists.
- Ask whether they offer remediation workshops, re-testing, and direct engagement with your developers and infrastructure teams.
Local presence and support model
- Confirm where testing is performed and how your data is handled (onshore vs offshore).
- Consider the value of on-shore teams if you handle sensitive data or operate in regulated sectors.
- Evaluate whether you need just point-in-time testing or ongoing support (e.g. SOC/MDR, continuous security validation).
When should you engage a penetration testing provider?
Common triggers for engaging a penetration testing company include:
- New or significantly changed applications, infrastructure, or cloud environments.
- Compliance requirements (e.g. Essential Eight maturity uplift, ISO 27001 audits, APRA CPS 234, PCI DSS).
- Cyber insurance renewals or new policies require evidence of regular testing.
- Board-level or executive concern following incidents, breaches in your sector, or significant technology changes (e.g. M&A, rapid cloud migration).
- Customer or partner demands for independent security assurance.
If you are facing any of these drivers, now is the right time to assess penetration testing providers and establish an annual or semi-annual pen testing cadence.
Why consider Borderless CS as your penetration testing partner?
Borderless CS differentiates itself among “penetration testing companies in Australia” through:
- CREST-recognised testers and internationally aligned methodologies. Borderless CS
- On-shore Australian and Fijian delivery with no offshore hand-offs, protecting data sovereignty and confidentiality.
- Strong governance and compliance alignment, with experience in Essential Eight, ISO 27001, NIST CSF, and sector-specific requirements.
- End-to-end support, from scoping and testing through to remediation workshops, re-testing, and ongoing managed security (SOC/MDR) if required.
Why Borderless CS Is Better Than Other Penetration Testing Companies in Australia
Choosing a penetration testing provider is a strategic decision that affects risk posture, compliance, cyber insurance readiness, and executive confidence. Borderless CS differentiates itself from other penetration testing companies in Australia across six critical dimensions: capability, accreditation, delivery quality, governance maturity, and client outcomes.
1. CREST-Recognised, Highly Experienced Testers
Most penetration testing companies promote certifications, but Borderless CS goes further by ensuring its offensive security practice is aligned with CREST International and CREST ANZ standards.
Why this matters: CREST recognition is globally accepted as the benchmark for technical assurance. It validates that Borderless CS testers operate with proven methodologies, strong ethical governance, and deep technical expertise.
Other providers may rely heavily on junior testers or offshore resources. Borderless CS does not.
2. 100% On-Shore Australian & Fijian Delivery (No Offshore Hand-Offs)
Many penetration testing companies secretly offshore work to lower-cost teams without disclosure.
“Borderless CS” maintains a strict no-offshore policy, delivering all work using onshore Australian engineers in compliance with Australian privacy, security, and data-sovereignty requirements.
Benefits for clients:
- Sensitive data never leaves Australian or Fijian governance jurisdiction
- Stronger data protection, confidentiality, and chain-of-custody
- Direct access to senior consultants
- No risk of offshore backdoors, data leakage, or unauthorised access
This is a major differentiator that enterprise and regulated customers value.
3. ISO 27001, ISO 9001, ISO 45001 & SOC 2 Type II Certified
Borderless CS is one of the few cybersecurity consultancies in Australia that holds multiple international accreditations, including:
- ISO 27001:2022 (information security management)
- ISO 9001:2015 (service quality)
- ISO 45001:2018 (workplace health & safety)
- SOC 2 Type II (security, confidentiality, integrity)
Why this matters: It demonstrates organisational maturity, governance discipline, and consistent delivery processes—areas where many boutique providers have significant gaps.
4. Deep Domain Expertise Across Regulated Sectors
Borderless CS is powerful in industries where security validation is not optional:
- Healthcare
- Financial Services
- Government & Local Councils
- Telecom & Critical Infrastructure
- Education
- High-growth SaaS & Digital Organisations
Competitors may perform “generic” penetration testing, but Borderless CS understands sector-specific regulations, such as:
- The Australian Privacy Act 1988
- APRA CPS 234
- ADHA Digital Health Requirements
- Essential Eight
- ISO 27001
- NIST CSF 2.0
- Cyber Insurance Technical Evidence Requirements
This allows Borderless CS to produce penetration testing reports that directly support audits, certifications, cyber insurance submissions, and board reporting.
5. True Manual Penetration Testing (Not Just Automated Scans)
Borderless CS specialises in deep manual testing, including exploit development, attack chaining, business logic abuse, and real-world adversary simulation.
Many competitors run automated scanners, reformat the output, and deliver it as “pen testing”.
Borderless CS approach includes:
- Manual exploitation
- Advanced cloud testing (Azure, AWS, GCP)
- API abuse, logic flaws, chained attack pathways
- Authentication bypass & privilege escalation techniques
- OWASP, MITRE, and NIST-aligned methodology
- Retesting included
This produces significantly more meaningful findings than tool-only testing.
6. Governance & Executive Reporting Nobody Else Matches
Most penetration testing reports are technical and complex for executives to consume.
Borderless CS provides:
- Executive-ready summaries
- Business impact explanations
- Risk ratings aligned to ISO 27005, NIST, and Essential Eight
- Priority roadmaps (30/60/90-day)
- Developer and infrastructure remediation workshops
- Clear cyber insurance–ready documentation
Boards and CISOs prefer this reporting style because it connects vulnerabilities to risk, compliance, and ROI.
7. End-to-End Cybersecurity Capability
Unlike companies that only perform penetration testing, Borderless CS provides a full stack of capabilities, including:
- 24/7 SOC & MDR services
- Threat detection and incident response
- Vulnerability management programs
- GRC, ISO 27001, NIST, CPS 234, Essential Eight
- Source code reviews
- Security architecture assessments
- Secure cloud design & hardening
- Cyber insurance readiness assessments
This makes Borderless CS a long-term strategic partner, not just a one-off vendor.
8. Strong Track Record & Client Trust
Borderless CS works with major organisations in Australia, including:
- Healthcare providers
- Financial institutions
- Education institutions & universities
- Large commercial groups
- Australian government entities and councils
- SaaS companies and digital businesses
Their growing footprint in Australia demonstrates consistent delivery quality and trusted advisory relationships.
Conclusion
Borderless CS is not just another cybersecurity provider—it’s a trusted, CREST-accredited penetration testing partner committed to helping businesses stay secure. With advanced methodologies, a skilled team, and industry-best practices, Borderless CS ensures you stay ahead of evolving cyber threats.
If you want reliable, professional, and high-impact penetration testing services in Australia, Borderless CS is the partner you can trust.
