Web App Penetration Testing

REXON CYBER

Secure Your Digital Front Door

Your web applications are at the heart of your customer experience — and a prime target for cyber attackers. Rexon Cyber’s expert-led web application penetration testing identifies vulnerabilities before they can be exploited, helping you protect data, maintain compliance, and uphold customer trust.
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What is Web App Penetration Testing?

Web Application Penetration Testing is a simulated cyber attack designed to assess the security of your web-based systems, such as online portals, customer dashboards, payment gateways, and internal business platforms.

It identifies vulnerabilities like SQL injection, cross-site scripting (XSS), authentication flaws, session management issues, and insecure coding practices — the very weaknesses exploited in many modern breaches.

For business leaders, this service provides more than technical assurance. It validates your organisation’s resilience against data loss, reputational damage, and compliance breaches across regulations such as PCI DSS, GDPR, ISO 27001, and DORA.

Why Your Business Needs Web App Penetration Testing

Your web applications often store or process sensitive customer and financial data, making them high-value targets. Even a single flaw can result in data theft, fraud, and reputational harm.

Regular testing ensures vulnerabilities are identified and addressed early, reducing risk exposure and demonstrating a proactive approach to cyber governance. For financial institutions and fintech firms, it is also a vital component of regulatory compliance and third-party assurance requirements.

Benefits of Web App Penetration Testing

  • Identify and remediate vulnerabilities in business-critical applications
  • Protect sensitive data and maintain customer trust
  • Demonstrate compliance with PCI DSS, ISO 27001, GDPR, and DORA
  • Reduce the likelihood of financial loss or regulatory penalties
  • Gain visibility into real-world attack paths and risk exposure
  • Strengthen investor and stakeholder confidence through proven resilience

How Rexon Cyber Delivers

Rexon Cyber’s application security experts combine manual testing and advanced tooling to provide a comprehensive analysis of your web applications. Our methodology aligns with the OWASP Top 10 and NIST 800-115 standards, ensuring full coverage of the most prevalent and exploitable web vulnerabilities.

Each engagement concludes with a clear, prioritised report including technical findings and an executive summary written in plain business language. We also offer retesting and advisory support to ensure vulnerabilities are remediated effectively and efficiently.

FAQ's

Web applications should be tested at least annually or after any major update, code change, or infrastructure migration.
All tests are carefully coordinated and, where required, performed against staging environments. Any production testing is managed to avoid downtime or user impact.
We assess for injection flaws, authentication weaknesses, access control issues, cross-site scripting, insecure configurations, and other OWASP Top 10 vulnerabilities.
Yes. Rexon Cyber can test both publicly accessible and internal applications as part of a wider penetration testing engagement.
Yes. We provide clear remediation guidance and offer retesting services to validate that issues have been resolved effectively.

Recommended Next Steps

Combine your Web Application Penetration Test with Web Services (API) Testing or a Cloud Security Audit for a complete evaluation of your external attack surface and application ecosystem.

Ready to Secure Your Web Application