Web Application Pentesting

In-depth security testing for web applications, from server-rendered sites to complex single-page applications.

OWASP Top 10PCI-DSSSOC 2
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Senior practitioners with deep offensive security backgrounds
Manual-first methodology — not repackaged scanner output
Specialized experience with modern SPA frameworks
Remediation reports written for developers with code-level guidance
Critical findings reported immediately during the engagement
Complimentary retesting of all identified findings
Fixed-price proposals delivered within 24 hours of scoping
Pay-after-delivery — review the report before we invoice

What is Web Application Pentesting?

Web applications remain the most common pathway for data breaches. Whether you're running a traditional server-rendered application or a modern single-page application built on React, Angular, or Vue.js, the attack surface is substantial — and growing with every new feature your team ships. Our web application penetration testing is a thorough, manual-first assessment that covers the OWASP Top 10 and extends well beyond it. We test for the vulnerabilities that scanners reliably find (basic XSS, simple SQL injection) and the ones they consistently miss (stored XSS through complex workflows, second-order SQL injection, business logic bypass, and access control failures that require understanding your application's data model). We cover the full vulnerability spectrum: SQL Injection in all its forms (error-based, blind, time-based, out-of-band), Cross-Site Scripting including stored, reflected, and DOM-based variants, Cross-Site Request Forgery, Insecure Direct Object References, Server-Side Request Forgery, XML External Entity injection, and authentication and session management weaknesses. But the vulnerabilities that tend to cause the largest breaches are the logic flaws — privilege escalation, access control bypass, and workflow manipulation — and those require human expertise to discover. We test from every relevant perspective: unauthenticated visitors, standard users, privileged roles, and administrators. This multi-role approach reveals horizontal privilege escalation (accessing another user's data), vertical privilege escalation (gaining administrative access from a regular account), and authentication bypass vulnerabilities. Session management testing examines token entropy, cookie security attributes, session fixation, concurrent session behavior, and logout effectiveness. We review security headers (Content-Security-Policy, HSTS, X-Frame-Options), CORS configuration, and third-party library vulnerabilities in your dependency tree. For modern SPA frameworks, we understand how client-side routing, state management, and API communication patterns create attack surfaces that differ from traditional applications. We test for DOM-based vulnerabilities, client-side storage exposure, and insecure handling of authentication tokens in browser memory. Every finding includes compliance mapping to the frameworks relevant to your business. Critical vulnerabilities are reported immediately during testing. Complimentary retesting is included after your team implements fixes.
Web application penetration testing showing browser-based vulnerability testing for XSS, SQL injection, and CSRF

Who Needs Web Application Pentesting?

E-commerce platforms processing customer payment information

Enterprise web applications with role-based access and complex workflows

SaaS providers demonstrating security maturity to enterprise clients

Healthcare portals handling sensitive patient records

Financial services platforms subject to regulatory security requirements

Web security tester examining application code and HTTP traffic for security vulnerabilities

Ready to get started?

Schedule a free scoping call with our Microsoft Security alumni. Fixed-price proposal within 24 hours.

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Our Methodology

01 - Step

Reconnaissance

We map the application structure, identify the technology stack and user roles, and define the testing scope.

02 - Step

Scanning & Probing

Combining automated and manual techniques to identify vulnerabilities across the OWASP Top 10 and beyond.

03 - Step

Manual Exploitation

We verify findings, test business logic pathways, and demonstrate real-world impact with proof-of-concept exploits.

04 - Step

Remediation & Retesting

We deliver prioritized remediation guidance with code examples and verify fixes through complimentary retesting.

Web pentest methodology phases including crawling, input fuzzing, authentication testing, and session management

What You Get with Web Application Pentesting

  • OWASP Top 10 Full Coverage
  • Business Logic & Workflow Manipulation Testing
  • Client-side Security Review (React/Angular/Vue)
  • Session Management & Authentication Analysis
  • Insecure Direct Object Reference (IDOR) Testing
  • Cross-Site Scripting (XSS) & SQL Injection Testing
  • Security Header & Configuration Review
  • Third-party Dependency Vulnerability Analysis
  • CSRF & SSRF Attack Testing
  • File Upload & Input Validation Review

Web Application Pentesting Pricing

Web App Pentest

Thorough web application security testing.

From $5,000per engagement
  • OWASP Top 10 Coverage
  • Multi-role Testing
  • 2-3 Week Delivery
  • Executive & Technical Reports
  • Complimentary Retesting
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OWASP Top 10 web vulnerability coverage with protection shields

Frequently Asked Questions

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