Penetration Testing
Web Application Penetration Testing
Web applications are often the most exposed part of an organization's digital footprint, accessible from anywhere, at any time, by anyone. That accessibility is exactly what makes them a primary target. A single overlooked input field, misconfigured permission, or vulnerable software component may be enough for a threat actor to gain unauthorized access to sensitive systems or data.
The risk
Why it matters
A web application handles logins, transactions, and often sensitive customer data, all in a public-facing environment. Left untested, vulnerabilities in that environment aren't theoretical risks; they're opportunities for exploitation by threat actors. The cost of a breach, in downtime, remediation, and reputational damage, consistently outweighs the cost of identifying and fixing issues before launch.
Our approach
Aligned with the OWASP Top 10 and OWASP Application Security Verification Standard (ASVS), combining automated scanning with manual, attacker-simulated testing to identify exploitable security weaknesses.
What's covered
Scope & deliverables
Assessment Scope
- Authentication & Access Control
- Session Management
- Input Validation & Injection
- Business Logic
- File Upload Handling
- Client-side Security (XSS, CSRF)
- Server-side Configuration & Information Disclosure
Deliverables
- Executive summary
- Technical report with CVSS-rated findings
- Proof-of-concept evidence, where applicable
- Remediation guidance mapped to each finding
- Optional: One round of post-remediation retesting
Questions
Frequently asked questions
How long does a web application pentest take?
Most engagements run one to three weeks depending on the size and complexity of the application, including reporting and a retest window.
Will testing disrupt our live website or application?
Testing is conducted in a staging environment by default. If production testing is necessary, safeguards and timing are agreed upon in advance.
Does Web Application Penetration Testing include API testing?
Web Application Penetration Testing includes assessment of APIs used directly by the web application where they form part of the engagement scope. Standalone or externally exposed APIs may require a dedicated API Penetration Testing engagement to achieve comprehensive coverage.
Do you provide a compliance-ready report?
Reports can be structured to support organizations preparing for compliance initiatives such as PCI DSS, ISO/IEC 27001, SOC 2, and other applicable industry or regulatory requirements.
How is Web Application Penetration Testing different from API Penetration Testing?
Web Application Penetration Testing evaluates the browser-facing application, including user interfaces, authentication, session management, and business logic. API Penetration Testing focuses specifically on backend interfaces that exchange data between applications and systems. Organizations using both web applications and APIs often benefit from testing both.
Go further
Related services
Organizations often pair this engagement with the assessments below for broader coverage.
API Penetration Testing
REST, GraphQL and SOAP testing against the OWASP API Security Top 10 — object-level authorization, excessive data exposure and abuse of business logic.
Learn MoreMobile Application Penetration Testing
Attacker-simulated testing of Android and iOS applications, covering local data storage, reverse engineering, authentication and the backend APIs behind them.
Learn MoreCloud Penetration Testing
Testing of AWS, Azure and GCP environments against CIS Benchmarks — IAM, storage permissions, network controls and cloud-native services.
Learn MoreVulnerability Assessment
Structured, repeatable identification of known weaknesses across your environment, with manual validation to cut false positives and prioritise real risk.
Learn More
Request a consultation
Tell us what you need assessed and we'll scope an engagement around it — timelines, safeguards, and deliverables agreed before any testing begins.