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Web Application Penetration Testing

Comprehensive security assessment of your web applications using industry-standard methodologies. I systematically identify and exploit vulnerabilities across your entire web stack — from front-end logic flaws to back-end injection attacks — delivering actionable findings that protect your business and your users.

Service Features

Every engagement is tailored to your application's architecture and risk profile, covering the most critical attack vectors that threat actors target in modern web applications.

OWASP Top 10 Testing

Rigorous testing against the OWASP Top 10 vulnerability categories, including injection flaws, broken access control, security misconfigurations, and cryptographic failures. Each finding is mapped to the latest OWASP framework with severity ratings and remediation guidance aligned to industry best practices.

Authentication & Session Testing

In-depth analysis of authentication mechanisms, session management, and credential handling. I test for brute-force resilience, session fixation, token predictability, insecure password recovery flows, and multi-factor authentication bypass techniques that could grant unauthorized access to user accounts.

Business Logic Testing

Manual testing of application-specific workflows to uncover logic flaws that automated scanners miss entirely. This includes price manipulation, privilege escalation through workflow abuse, race conditions in transaction processing, and bypasses in multi-step business processes that could lead to financial loss or data exposure.

API Endpoint Security

Thorough examination of REST and GraphQL API endpoints for authentication weaknesses, broken object-level authorization, excessive data exposure, and mass assignment vulnerabilities. I validate that every API endpoint enforces proper access controls and returns only the data the requesting user is authorized to see.

Input Validation Testing

Comprehensive testing of all user input vectors for SQL injection, cross-site scripting (XSS), XML external entity (XXE) attacks, server-side request forgery (SSRF), and command injection. I probe every form field, URL parameter, HTTP header, and file upload mechanism to identify injection points.

Configuration & Deployment Review

Assessment of server configurations, security headers, TLS/SSL implementation, CORS policies, and deployment practices. I identify exposed admin panels, default credentials, information leakage through error messages and debug endpoints, and misconfigured cloud services that expand your attack surface.

Testing Methodology

My web application penetration testing follows a structured, repeatable methodology that combines automated scanning with deep manual analysis. Every phase builds on the previous one, ensuring comprehensive coverage and zero false negatives in the final report.

01

Reconnaissance

I begin by mapping the application's technology stack, identifying frameworks, libraries, server software, and third-party integrations. Using passive and active reconnaissance techniques, I enumerate subdomains, discover hidden endpoints, and gather intelligence about the application's architecture to build a complete attack surface profile before testing begins.

02

Mapping & Discovery

Systematic crawling and spidering of the application to identify all accessible pages, forms, API endpoints, and functionality. I map authentication boundaries, user roles, and privilege levels to understand the application's access control model. Hidden parameters, backup files, and administrative interfaces are enumerated through directory brute-forcing and content discovery.

03

Vulnerability Assessment

Each discovered component is tested against a comprehensive checklist of vulnerability classes. Automated scanners identify low-hanging fruit, while manual testing targets complex vulnerabilities like business logic flaws, race conditions, and chained attack vectors. Every finding is validated to eliminate false positives and confirmed with proof-of-concept evidence.

04

Exploitation & Validation

Confirmed vulnerabilities are safely exploited to demonstrate real-world impact and assess severity. I demonstrate data exfiltration potential, privilege escalation paths, and lateral movement opportunities. All exploitation is performed within the agreed scope and rules of engagement, with immediate notification for any critical findings that require urgent attention.

05

Reporting

I deliver a comprehensive report that includes an executive summary for stakeholders, detailed technical findings with CVSS v3.1 scores, step-by-step reproduction instructions, annotated screenshots, and prioritized remediation recommendations. Each vulnerability includes both quick-fix solutions and long-term architectural improvements to prevent recurrence.

Tools & Technologies

I leverage industry-leading tools combined with custom scripts and manual techniques to ensure thorough coverage that no single automated scanner can achieve alone.

Burp Suite Pro
OWASP ZAP
SQLMap
Nikto
Dirb / Gobuster
Postman

Key Benefits

Investing in professional web application penetration testing delivers measurable security improvements and protects your organization from the most common and devastating attack vectors.

Identify critical web application vulnerabilities before attackers do
Prevent costly data breaches and protect sensitive information
Comply with PCI DSS, SOC 2, HIPAA, and ISO 27001 standards
Protect customer data and maintain user trust
Reduce your attack surface with targeted remediation
Get actionable remediation guidance with clear priorities

Ready to Secure Your Web Application?

Let's discuss your web application's security posture and build a testing plan tailored to your technology stack, risk tolerance, and compliance requirements. Every engagement begins with a free scoping call.

Request a Consultation