Web Application Testing

Your web applications are often the most exposed part of your organization. We find the bugs before the attackers do.

What is Web Application Penetration Testing?

Web application penetration testing (also called web app pentesting) is a comprehensive security assessment of your web applications, websites, and APIs. We identify vulnerabilities that could allow attackers to compromise your application, steal data, or gain unauthorized access to your systems. Web applications are often the most exposed and attacked part of an organization's infrastructure.

What Web Application Testing Covers

Our web application penetration testing service evaluates all aspects of your web application security:

• Custom web applications - Find vulnerabilities in your business-specific applications
• REST APIs - Test REST API security, authentication, and data exposure
• GraphQL APIs - Assess GraphQL implementations for security flaws
• OWASP Top 10 vulnerabilities - Test for injection, broken authentication, XSS, CSRF, and more
• Authentication and authorization - Identify broken access control and privilege escalation
• Session management - Test session tokens, cookies, and session handling
• Data validation and input handling - Find injection vulnerabilities (SQL, command, XML, etc.)
• Business logic vulnerabilities - Identify flaws in application workflows and features
• Third-party integrations - Test security of integrated payment gateways, SSO, and APIs
• File upload functionality - Identify malware upload and file-based vulnerabilities
• Mobile APIs - If applicable, test APIs consumed by mobile applications
• Cryptography and encryption - Verify proper implementation of encryption and secure data transmission

Web Application Testing Methodology

We combine both automated and manual testing to find vulnerabilities:

• Application Reconnaissance - Map the application's structure, pages, and functionality
• Automated Scanning - Use industry-standard tools to identify potential vulnerabilities
• Manual Testing - Conduct hands-on testing for logic flaws and business-specific vulnerabilities
• Authentication Testing - Test login, multi-factor authentication, password reset, and session handling
• Input Validation Testing - Probe for injection vulnerabilities across all input vectors
• Access Control Testing - Attempt to bypass authorization controls and escalate privileges
• Business Logic Testing - Test workflows for exploitable flaws (price manipulation, order logic, etc.)
• API Testing - Comprehensive REST/GraphQL API security assessment
• Data Sensitivity Testing - Identify exposed sensitive data (PII, financial data, credentials)

Every finding is verified manually to eliminate false positives and confirm real-world impact.

Web Application Testing Deliverables

Upon completion of your web application test, you'll receive:

• Detailed findings report with screenshots and proof of exploitation
• Step-by-step reproduction steps for each vulnerability
• Risk ratings (Critical, High, Medium, Low) with CVSS scores
• Developer-friendly remediation guidance for each finding
• Executive summary highlighting business impact and risks
• Live debrief call with development and security teams
• Retest option to verify remediation after fixes are deployed
• Recommendations for secure development practices

Why Web Application Testing is Critical

Web applications are under constant attack and represent a significant risk:

• High-value targets - Web apps directly access customer data and business systems
• Frequently exploited - OWASP Top 10 vulnerabilities are found in most applications
• Regulatory requirements - PCI-DSS, HIPAA, SOC 2, and other regulations require web app testing
• Continuous threats - New vulnerabilities emerge constantly; regular testing is essential
• Developer blind spots - Security vulnerabilities are often missed during development
• Third-party risk - Third-party libraries and integrations often contain vulnerabilities

OWASP Top 10 and Web Application Security

We specifically test for the OWASP Top 10 vulnerabilities that represent the most critical web application security risks:

• Injection (SQL, command, XML, etc.)
• Broken Authentication
• Sensitive Data Exposure
• XML External Entities (XXE)
• Broken Access Control
• Security Misconfiguration
• Cross-Site Scripting (XSS)
• Insecure Deserialization
• Using Components with Known Vulnerabilities
• Insufficient Logging & Monitoring

Typical Web Application Testing Timeline

Timeline depends on application complexity and scope:

• Simple applications (1-5 pages) - 1 week
• Medium complexity (5-20 pages, basic API) - 1-2 weeks
• Complex applications (20+ pages, multiple APIs) - 2-4 weeks
• Retest (verification of fixes) - 3-5 days
• Report and debrief - 1 week after testing

What You'll Need to Provide

To conduct a successful web application test, provide:

• Application URLs or access - Staging or production URLs to be tested
• API documentation - OpenAPI/Swagger specs, Postman collections, or documentation
• Test accounts - User credentials for different privilege levels (admin, user, guest)
• Scope definition - Which pages, features, and APIs should be tested
• Technology stack - Programming language, frameworks, databases, and key libraries
• Authentication details - How multi-factor authentication or SSO works
• Business documentation - Workflows and business logic important to understand

Web Application Testing Pricing

Web application testing costs vary based on complexity:

• Simple web apps (1-5 pages, basic functionality) - Starting at $2,500
• Medium complexity (5-20 pages, simple APIs) - Starting at $5,750
• Complex applications (20+ pages, multiple APIs, complex logic) - Starting at $9,200
• API-only testing - Starting at $3,000

All pricing includes comprehensive testing, detailed report, and debrief call. Retest pricing is available for verifying fixes. We'll provide a firm quote after scoping your application.

When You Need Web Application Testing

Schedule web application testing if:

• You haven't tested your application security in the past 12 months
• You're launching a new web application or major new feature
• You need to meet regulatory or compliance requirements (PCI-DSS, HIPAA, SOC 2)
• Your cyber liability insurance requires application testing
• You've experienced a security incident or breach
• You're integrating new third-party services or APIs
• You're preparing for a security audit or assessment
• You want to verify fixes from a previous penetration test