Web Application Penetration Testing

Where functionality meets security

Deep, manual penetration testing for customer portals, internal dashboards, and SaaS platforms — aligned with OWASP WSTG and focused on real-world exploit chains.

Aligned with OWASP WSTG
|Attack-chain focused|Validated exploitation only
Web application attack surface visualization
Service description

What Web Application Penetration Testing covers

A concise overview for buyers, followed by deeper context for your security and engineering teams.

Web Application Penetration Testing assesses the security of web-based applications such as customer portals, internal dashboards, SaaS platforms, and other business-critical web systems. The service examines how core security controls are implemented across the application, including authentication mechanisms, authorization logic, session handling, and application workflows, with the objective of identifying how these controls could be bypassed or abused by an attacker.

Testing is aligned with the OWASP Web Security Testing Guide (WSTG) to ensure systematic coverage of common web vulnerability classes, while extending beyond checklist-driven testing through manual, attacker-driven analysis. Particular focus is placed on injection vulnerabilities, role-based access control enforcement, privilege escalation between user roles, and misuse of intended application flows, as these areas frequently lead to real-world compromise.

What differentiates our approach is the emphasis on attack chaining and validated exploitation rather than treating issues in isolation. Lower-severity findings such as information disclosure or weak validation are analyzed in combination to determine whether they can be leveraged to achieve higher-impact outcomes, such as account takeover or command execution. All findings are validated through controlled exploitation to ensure they represent practical risk and meaningful impact, allowing teams to prioritize remediation effectively.

Flowchart

Our web application penetration testing process

A single, end-to-end view of how an engagement runs — from first contact through readout and remediation support.

Engagement stages
A single, end-to-end view of how we assess, attack, and validate risk across your web application.
Step 01
Pre-Engagement & Architecture Understanding
Clarify objectives, in-scope apps, data sensitivity, and high-value paths while reviewing architecture and integrations.
Step 02
Attack Surface Mapping
Map endpoints, roles, workflows, and integrations to identify where attackers are most likely to start.
Step 03
Input Handling, Injection & File Processing Testing
Test how the app handles untrusted data, file uploads, and parsing to uncover injection and processing flaws.
Step 04
Authorization & Access Control Validation
Validate role-based access, vertical and horizontal privilege separation, and object-level authorization.
Step 05
Business Logic & Workflow Abuse
Probe multi-step flows, limits, and assumptions to identify ways to abuse intended business logic.
Step 06
Authentication & Session Management Testing
Assess login, MFA, session handling, and recovery flows for weaknesses that enable account takeover.
Step 07
Exploit Chain Validation
Chain lower-severity issues into realistic end-to-end attacks to demonstrate true business impact.
Step 08
Reporting & Remediation Guidance
Deliver clear reporting, risk-based prioritisation, and actionable remediation guidance for your teams.
Deliverables

What you take away

Outputs designed for both engineering and leadership teams, so findings actually get fixed.

Detailed vulnerability report with severity rankingExecutive summary, methodology, and technical findings mapped to CVSS and OWASP.
Proof-of-exploitation for validated issuesScreenshots and evidence for each critical and high-risk vulnerability.
Clear explanation of business and operational impactRealistic attack paths and what a successful compromise would mean.
Actionable remediation guidance for developersConcrete code-level and configuration recommendations.
Optional technical walkthrough with engineering teamsSession to review findings, answer questions, and align on remediation.
Prioritised remediation roadmap for security leadershipHigh-level view grouping issues by risk, effort, and owner to keep remediation moving.
Optional retest window after fixesTargeted verification of critical and high findings so you can close the loop with confidence.

Ready to harden your web applications?

Every engagement includes a formal report and optional live readout call. Sample reports are available on request before you commit to an engagement.