Penetration Testing Sydney: CREST-Accredited Pen Testing Services

Borderless CS provides CREST-accredited penetration testing in Sydney, with manual web application, API, network, cloud and mobile pen testing delivered from our office at 60 Martin Place. As one of Sydney’s dual CREST-accredited penetration testing companies, we offer fixed quotes, risk-rated reports and retesting for every pentest.

Penetration Testing in Sydney

Every new app, integration and user account is another way in. Penetration testing in Sydney finds those gaps before someone else does.

CREST-accredited penetration testing
Experienced security consultants
Actionable findings and remediation
Web, API, cloud, network & mobile testing
Trusted penetration testing in Sydney
Leading penetration testing company in Australia

Dual CREST accredited (ANZ + International)

ISO 27001:2022 certified

SOC 2 Type 2 Compliance

CREST + OSCP certified testers

Letter of Attestation issued

200+ engagements delivered

2–4 weeks from kick-off to final report

Your attack surface

More systems. More integrations. More ways in.

Sydney businesses operate in one of Australia’s most connected and digitally dependent commercial environments. From financial services and professional services to healthcare, technology, SaaS and growing businesses, organisations increasingly rely on web applications, APIs, cloud platforms and interconnected networks to operate.

But every new application, integration, cloud service and user account can also expand your attack surface.

Professional penetration testing in Sydney helps your organisation identify security weaknesses before they can be exploited by a real attacker.

Borderless CS provides CREST-accredited penetration testing services for Sydney organisations that need more than an automated vulnerability scan. Our security consultants use manual testing, recognised methodologies and controlled exploitation techniques to identify vulnerabilities, validate their potential impact and provide practical recommendations for remediation.

Whether you need to test a web application, API, network, mobile application or cloud environment, our goal is simple: find the security gaps before attackers do.

WHY IT MATTERS

Why Penetration Testing Matters for Sydney Businesses

Security tools are important, but having firewalls, endpoint protection, monitoring and vulnerability scanners does not automatically mean an organisation is secure.

A vulnerability may exist because of a misconfiguration, weak access control, authentication issue, insecure API, outdated component or a combination of weaknesses that automated security tools may not fully assess.

That is where hands-on security testing provides additional assurance.

Rather than simply listing potential vulnerabilities, ethical hackers investigate weaknesses and, where appropriate within the agreed scope, safely validate whether they could be exploited.

This gives your organisation a much clearer understanding of:

01Which vulnerabilities represent genuine security risks
02How an attacker could potentially exploit them
03Which applications, systems or information could be affected
04Which vulnerabilities should be remediated first
05Whether remediation has successfully addressed identified weaknesses

Independent assurance

Why CREST Accreditation Matters When You Choose a Pen Tester

Choosing a pen testing provider means giving security professionals controlled access to some of your organisation’s most sensitive applications, infrastructure and information.

Independent accreditation can therefore be an important consideration.

Borderless CS is a CREST-accredited penetration testing company providing security testing services to organisations across Sydney and Australia. Our pen test engagements combine recognised testing methodologies with hands-on investigation to identify vulnerabilities that could expose your organisation to cyber risk.

Borderless CS holds CREST ANZ and CREST International accreditation for penetration testing.

CREST ANZAccredited penetration testing

CREST InternationalAccredited penetration testing

ISO 27001:2022Information security management

SOC 2 Type 2Independently audited controls

CREST + OSCPCertified testing consultants

Essential Eight, NIST, ISMAligned testing and reporting

What we test

Our Penetration Testing Services in Sydney

Every organisation has a different technology environment and attack surface. Our security testing services in Sydney can be tailored to the systems, applications and risks relevant to your business.

Web Application Penetration Testing

Web application penetration testing in Sydney checks your login, access controls, session handling, business logic and APIs against real attack techniques, including the OWASP Top 10. Borderless CS tests each user role manually and shows exactly how every finding could be exploited.

API Penetration Testing

APIs can expose sensitive business functions and data if they are not properly secured. Our API penetration testing assesses authentication, authorisation, access controls, data exposure, input validation and other API-specific security risks.

External Network Penetration Testing

External Network penetration testing in Sydney covers both external, internet-facing systems and your internal network. We look for exposed services, weak credentials, misconfigurations and lateral movement paths an attacker could use after getting in

Internal Network Penetration Testing

Internal penetration testing assesses what could happen if an attacker, compromised user or malicious insider gained access to your internal network. Testing can identify weaknesses involving network configuration, access controls, credentials, privilege escalation and lateral movement.

Cloud Penetration Testing

Cloud environments can introduce security risks through identity permissions, exposed services, insecure configurations and poorly protected resources. We provide cloud security testing for environments including Microsoft Azure and AWS, with the scope tailored to your organisation's architecture and requirements.

Mobile Application Penetration Testing

Our mobile application testing assesses security weaknesses across mobile applications, authentication mechanisms, APIs, sensitive information handling and associated backend services.

AI and SaaS Application Penetration Testing

Modern businesses are rapidly adopting SaaS platforms and AI-enabled applications. Security testing can help identify weaknesses involving authentication, data exposure, access controls, APIs, tenant isolation and application-specific security risks.

Know the difference

Penetration Testing vs Vulnerability Assessment

A vulnerability assessment and penetration test are related, but they are not the same thing.

Vulnerability assessment

Finds what might be wrong

A vulnerability assessment primarily identifies potential security weaknesses across your environment. It is useful for discovering and managing vulnerabilities at scale.

Penetration testing

Proves what an attacker could do

A pen test goes further. Our testers manually investigate identified weaknesses and, where appropriate, safely attempt controlled exploitation to understand whether a vulnerability can actually be used and what the potential impact could be.

How it works

Our Sydney Penetration Testing Process

A professional pen testing engagement in Sydney should be controlled, transparent and aligned with your business requirements.

Scoping and Consultation

We start by understanding your environment, applications, infrastructure, business objectives and security requirements.

Together, we define the systems included in testing, testing methodology, exclusions, access requirements and engagement timeline.

Reconnaissance and Attack Surface Analysis

Our testers assess the target environment to understand its exposed attack surface and identify potential entry points.

Manual Security Testing

Our consultants perform hands-on security testing using recognised penetration testing methodologies and real-world attack techniques.

Automated tools may support the assessment, but they do not replace manual investigation.

Controlled Exploitation

Where appropriate and permitted within the agreed scope, identified vulnerabilities are safely validated to determine whether they can be exploited and what impact exploitation could potentially have.

Risk Analysis and Reporting

Findings are reviewed in context and documented with technical evidence, risk information and practical remediation recommendations.

Remediation and Retesting

Once your team has addressed the identified vulnerabilities, retesting can validate whether the security issues have been successfully remediated.

Deliverables

What Do You Receive After a Penetration Test?

Our pen test reports are designed to provide more than a list of vulnerabilities. Depending on the engagement, deliverables can include:

Executive summary for management

Detailed technical findings

Risk-rated vulnerabilities

Supporting technical evidence

Business impact information

Prioritised remediation recommendations

Technical consultation

Remediation guidance

Retesting of identified vulnerabilities

This gives both management and technical teams useful information for understanding and reducing security risk.

Buyer's checklist

Choosing Between Penetration Testing Companies in Sydney

Penetration testing companies in Sydney vary widely in accreditation, manual testing depth and report quality, so compare them on evidence rather than price alone. There are many penetration testing companies in Sydney, but testing approaches, technical capability, and reporting quality can vary significantly. When evaluating a provider, consider whether they can clearly explain:

A note on price

Price is naturally an important consideration, but it should not be the only factor when comparing security testing providers.

A low-cost automated scan presented as a penetration test may provide very different assurance from an engagement involving experienced consultants manually investigating your environment.

Local expertise

Penetration Testing Companies in Australia: Why Local Expertise Matters

When researching penetration testing companies in Australia, organisations should consider more than technical capability alone.

Understanding Australian security, compliance, procurement and customer-assurance requirements can be valuable when penetration testing forms part of a wider security program.

Borderless CS provides offensive security testing services in Australia for organisations across different industries and technology environments.

Our Australian-focused approach combines technical security testing with clear reporting and practical remediation guidance, helping organisations understand both the vulnerability and its potential business impact.

Why Borderless CS

Why Choose Borderless CS for Penetration Testing in Sydney?

Sydney organisations choose Borderless CS when they need professional pen testing supported by recognised security expertise and clear, actionable reporting. Our approach includes:

CREST-accredited penetration testing

Testing delivered through established security processes and recognised penetration testing methodologies.

Manual security testing

Automated tools support our assessments, but hands-on testing and validation remain central to the engagement.

Australian-based cybersecurity expertise

We understand the security and assurance requirements facing Australian organisations.

Clear and actionable reporting

We explain what was identified, why it matters and how your team can address it.

Testing across modern environments

Our capabilities cover web applications, APIs, internal and external networks, mobile applications, cloud platforms, SaaS environments and other modern technology environments.

Remediation and retesting

Finding vulnerabilities is only part of the process. Retesting can confirm whether identified weaknesses have been successfully remediated.

FAQs

Frequently Asked Questions About Penetration Testing Sydney

Which penetration testing companies in Sydney are CREST accredited?

Several penetration testing companies in Sydney hold CREST accreditation. Borderless CS holds both CREST ANZ and CREST International accreditation for penetration testing, and you can verify this on the CREST websites.

What pen testing services are available in Sydney?

The most requested pen testing services in Sydney are web application, API, external and internal network, cloud (Microsoft Azure and AWS) and mobile application testing. Borderless CS delivers all of these as manual, consultant-led pentests.

Who are the best penetration testing service providers in Sydney?

The best penetration testing service providers in Sydney hold CREST accreditation, use certified testers (CREST, OSCP), test manually rather than relying on scanners, and include retesting. Borderless CS meets all four and works from a Sydney office at 60 Martin Place.

How much does penetration testing cost in Sydney and Australia?

Penetration testing in Sydney is priced on scope, not a fixed package. The main cost drivers are the number of applications, APIs or IP addresses in scope, the number of user roles to test, whether testing is black-box, grey-box or white-box, and whether retesting is included. A focused test of one web application usually needs a few days of consultant effort, while a multi-application or network-wide engagement needs more. Borderless CS provides a fixed quotation after a free scoping call, so you know the full cost before testing starts.

How long does a penetration test take?

Most penetration tests take three to fifteen business days of active testing. A single web application or API usually takes three to five days, and an external network test two to five days. A combined internal, external and application engagement can run two to three weeks. From kick-off to final report, most engagements take 2 to 4 weeks, and retesting is scheduled once your team has applied fixes.

How often should we conduct penetration testing?

Most organisations should run a penetration test at least once every 12 months and after any significant change, such as a new application release, a major infrastructure change, a cloud migration or a merger. Organisations handling payment cards, health data or financial services often test more frequently because standards such as PCI DSS expect testing at least annually and after significant changes. Fast-moving SaaS teams often test each major release.

Can small and medium-sized businesses in Sydney benefit from penetration testing?

Yes. Small and medium-sized businesses are frequent targets because attackers expect weaker defences, and many SMEs now need a penetration test to win contracts, pass customer security questionnaires or apply for cyber insurance. A tightly scoped test, such as your customer-facing web application or internet-facing systems, gives an SME clear, prioritised fixes without the cost of testing everything at once.

What is penetration testing?

Penetration testing is a controlled, authorised security assessment in which qualified testers attempt to find and safely exploit weaknesses in your applications, networks or cloud environment, the same way a real attacker would. The goal is to show which vulnerabilities are genuinely exploitable, what an attacker could reach, and how to fix each issue in order of risk.

What is the difference between penetration testing and vulnerability scanning?

A vulnerability scan is an automated check that lists potential weaknesses. A penetration test is performed by skilled consultants who manually investigate those weaknesses, chain them together and safely confirm whether they can actually be exploited. Scanning tells you what might be wrong. Penetration testing shows what an attacker could really do, which removes false positives and makes remediation easier to prioritise.

What is the difference between black-box, grey-box and white-box testing?

In black-box testing, the tester starts with no internal knowledge, like an external attacker. In grey-box testing, the tester is given limited information, such as user accounts for each role, which is the most common and cost-effective approach for applications. In white-box testing, the tester has full access to documentation, architecture and sometimes source code, giving the deepest coverage. Borderless CS recommends the approach during scoping based on your risk and objectives.

What access do you need from us to run a penetration test?

We need a signed authorisation and agreed scope, the target URLs, IP ranges or cloud accounts, test user accounts for each role being assessed, and a technical contact during testing. For internal network testing we also need VPN access or an on-site connection. Depending on the engagement, we may ask you to allow-list our testing IP addresses and confirm preferred testing windows.

Will penetration testing disrupt our business operations?

Penetration testing is planned to minimise disruption. Testing is agreed in a rules-of-engagement document, denial-of-service style attacks are excluded unless you request them, and higher-risk activities can be scheduled out of hours or run against a staging environment. Our consultants stop and contact you immediately if a critical issue or unexpected system behaviour is found during testing.

What types of penetration testing does Borderless CS offer in Sydney?

Borderless CS offers web application, API, external network, internal network, cloud (Microsoft Azure and AWS), mobile application, and AI and SaaS application penetration testing for Sydney organisations. Engagements can cover a single application or a combined scope across applications, infrastructure and cloud, tailored to your environment and compliance needs.

What does your penetration test report include?

Every report includes an executive summary for leadership, the scope and methodology used, and each finding with a risk rating, technical evidence, business impact and step-by-step remediation guidance. Findings are prioritised so your team knows what to fix first. After retesting, Borderless CS can issue a Penetration Testing Letter of Attestation to share with customers, auditors or insurers.

Which compliance frameworks require penetration testing?

PCI DSS explicitly requires internal and external penetration testing at least every 12 months and after significant changes. Other frameworks expect regular security testing as evidence that controls work, including ISO 27001, APRA CPS 234 for regulated financial entities, the SOCI Act for critical infrastructure, SOC 2, the Australian Government ISM and the Privacy Act requirement to take reasonable steps to protect personal information. Many enterprise and government customers also require a recent penetration test from their suppliers.

Can penetration testing help with our cyber insurance application?

Yes. Many cyber insurers ask whether you test your systems regularly and fix what is found. A recent penetration test report, evidence of remediation and a letter of attestation demonstrate active risk management, which can support your application and renewal. Final terms and premiums are always set by the insurer.

How is Borderless CS different from other penetration testing companies in Sydney?

Borderless CS combines dual CREST accreditation with manual, consultant-led testing rather than relabelled automated scans. Every engagement includes evidence-based findings, clear remediation guidance written for both technical and business readers, and retesting to confirm fixes. With an office at 60 Martin Place, our Sydney clients work directly with the consultants doing the testing.

How can we get started with penetration testing in Sydney?

Book a free scoping consultation with our team. We will discuss your environment, objectives and any compliance or customer deadlines, then send a fixed quotation and proposed timeline. Once the scope and authorisation are signed, testing can usually begin within a few weeks.

Free scoping consultation

Strengthen Your Security Before Attackers Find the Gaps

You do not need to wait for a security incident to discover where your weaknesses are.

A professional pen test can help your Sydney organisation identify exploitable vulnerabilities, understand potential business impact and prioritise remediation before those weaknesses are used against you.

Whether you are preparing for a customer security review, strengthening an existing security program, testing a new application or looking for experienced penetration testing companies in Sydney, Borderless CS can help you define the right testing scope.

Talk to our penetration testing team today

Free scoping consultationNo cost
Quotation based on your scopeTailored
CREST-accredited testersANZ + Intl
Retesting of findingsAvailable

Sydney office

60 Martin Place, Sydney NSW 2000

Why Borderless CS?

CREST- ANZ and International Accredited Penetration Testing Provider | Manual Testing by Experienced Security Professionals |
Clear and Actionable Reporting | Retesting to Validate Remediation