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API Penetration Testing Australia
API Penetration Testing
Protect your APIs from security vulnerabilities before attackers can exploit them. Our CREST-accredited API Penetration Testing Australia service identifies authentication flaws, authorisation weaknesses, insecure business logic and API security risks across REST, GraphQL and SOAP APIs. Using manual security testing aligned with the OWASP API Security Top 10, we help Australian organisations strengthen their applications, safeguard sensitive data and meet compliance requirements.
Trusted by Australian organisations for independent, CREST-accredited penetration testing.
Our API Penetration Testing Australia service helps identify security vulnerabilities across REST, GraphQL and SOAP APIs before they can be exploited. Looking for broader security testing? Explore our Web Application Penetration Testing, External Network Penetration Testing, and Mobile Application Penetration Testing services for comprehensive protection.
What is API Penetration Testing?
API Penetration Testing is a manual security assessment that evaluates the APIs powering your web, mobile and cloud applications. It identifies vulnerabilities that could allow attackers to access sensitive data, bypass authentication, escalate privileges or abuse business logic.
At Borderless CS, our API Penetration Testing Australia service follows industry-recognised methodologies, including the OWASP API Security Top 10, to assess REST, GraphQL and SOAP APIs. Our security specialists simulate real-world attack techniques to uncover risks that automated scanners often miss, providing practical remediation guidance to help you strengthen your API security.
Why API Penetration Testing Matters
APIs connect applications, users and third-party services, making them a common target for cyberattacks. Regular API Penetration Testing Australia helps identify vulnerabilities before they can be exploited, protecting sensitive data, strengthening application security and supporting compliance with industry standards.

Identify API Security Vulnerabilities
Discover authentication, authorisation and configuration weaknesses before attackers do.

Protect Sensitive Data
Reduce the risk of unauthorised access to customer, financial and business information.

Prevent Business Logic Abuse
Identify flaws that could allow attackers to bypass intended application workflows.

Strengthen Authentication & Access Controls
Validate user authentication, token handling and permission enforcement across your APIs.

Support Compliance Requirements
Help meet security requirements for standards such as ISO 27001, PCI DSS and the Essential Eight.

Improve Cyber Resilience
Receive practical remediation guidance to reduce risk and strengthen your API security posture.
Why Choose Borderless CS for API Penetration Testing?
Borderless CS delivers CREST-accredited API Penetration Testing Australia to help organisations identify and remediate API security vulnerabilities before they become business risks. Our experienced Australian cybersecurity specialists perform manual security testing aligned with the OWASP API Security Top 10, uncovering authentication flaws, authorisation issues, business logic weaknesses and other risks that automated tools often miss.
Every engagement includes clear executive and technical reports, prioritised remediation recommendations and optional retesting to validate fixes. Whether your APIs support web applications, mobile apps or cloud platforms, we provide practical security insights that help protect sensitive data, strengthen your security posture and support compliance requirements.
Our API Penetration Testing Process
Our Internal Network Penetration Testing Australia process follows a structured, risk-based methodology to identify vulnerabilities across your internal environment. We combine manual testing with industry-recognised techniques to validate real security risks and provide practical recommendations to strengthen your organisation’s security. For complete coverage, combine this assessment with our External Network Penetration Testing, Web Application Penetration Testing, and API Penetration Testing services.

Scoping & Planning
Define the API scope, testing objectives, authentication methods and engagement rules.

API Discovery & Reconnaissance
Review API endpoints, documentation and configurations to understand the attack surface.

Manual Security Testing
Assess authentication, authorisation, input validation, business logic and API-specific vulnerabilities using manual testing techniques.

Controlled Exploitation
Safely validate identified vulnerabilities to confirm their impact without affecting production systems.

Risk Analysis & Reporting
Provide executive and technical reports with risk ratings, proof of concept and practical remediation guidance.

Remediation & Retesting
Verify that security issues have been successfully resolved and confirm the effectiveness of implemented fixes.
What We Test
Our API Penetration Testing Australia service assesses the security of your APIs to identify vulnerabilities that could expose sensitive data or allow unauthorised access. Depending on the agreed scope, our assessment may include:
- Authentication
- Authorisation
- Input Validation
- Business Logic
- Data Exposure
- Rate Limiting
- API Configuration
- API Endpoints
Ready to Strengthen Your Security?
Not sure where your security gaps are or which type of penetration testing you need? Talk to our team about your environment, concerns and testing requirements, and we’ll help you work out the right approach
Benefits of API Penetration Testing
API Penetration Testing helps organisations identify and remediate security weaknesses before they can be exploited. By assessing real-world attack scenarios, you can protect sensitive data, strengthen your applications and reduce the risk of security incidents.

Identify API Vulnerabilities
Discover security weaknesses before they can be exploited by attackers.

Protect Sensitive Data
Reduce the risk of unauthorised access to customer and business information.

Prevent Business Logic Abuse
Identify flaws that could allow attackers to bypass intended application workflows.

Strengthen Authentication
Validate authentication, authorisation and access controls across your APIs.

Support Compliance
Help meet the security requirements of standards such as ISO 27001 and PCI DSS.

Improve Cyber Resilience
Receive practical remediation guidance to strengthen your overall API security.
Supporting Compliance and Security Assurance
API Penetration Testing can support security and compliance programs by providing independent evidence that internet-facing infrastructure has been assessed.
Penetration testing does not guarantee compliance on its own, but it can provide valuable assurance and help identify areas requiring improvement.
Our testing may support requirements associated with:
- ISO/IEC 27001
- APRA CPS 234
- NIST Cybersecurity Framework
- Customer security reviews
- Cyber insurance requirements
- PCI DSS
- SOCI Act obligations
- Essential Eight maturity initiatives
- Internal risk management programs
Frequently asked questions
What is API Penetration Testing?
API Penetration Testing is a security assessment that identifies vulnerabilities in APIs used by web, mobile and cloud applications. It helps uncover authentication, authorisation, business logic and data exposure risks before they can be exploited.
What types of APIs do you test?
We assess REST, GraphQL and SOAP APIs, including public, private, partner and internal APIs. Each engagement is tailored to your application’s architecture and business requirements.
Do you follow the OWASP API Security Top 10?
Yes. Our testing is aligned with the OWASP API Security Top 10 and recognised industry best practices to identify common and emerging API security risks.
Will API Penetration Testing affect our production environment?
Our testing is carefully planned to minimise disruption. Where production testing is required, we coordinate with your team and perform controlled testing to reduce operational impact.
How often should APIs be tested?
We recommend testing before production releases, after significant application changes, and at least annually as part of your ongoing cybersecurity program.
Do you provide remediation support and retesting?
Yes. Every engagement includes detailed executive and technical reports with prioritised remediation recommendations. We also offer retesting to verify that identified vulnerabilities have been successfully resolved.
WHY BORDERLESS CS? Why Borderless CS?
CREST-Accredited Penetration Testing Provider | Manual Testing by Experienced Security Professionals |
Clear and Actionable Reporting | Retesting to Validate Remediation
Our Philosophy : Customer First; Every Step of the Way.
Get a Free Penetration Testing Consultation
Protect your organisation with Australia’s leading CREST-accredited penetration testing services.
Contact Borderless CS today for a free consultation and tailored security roadmap.

100% Cybersecurity Focused Company