Web Application Penetration Testing
In-depth, manual-led testing of web applications aligned with OWASP Top 10, OWASP ASVS, OWASP Web Security Testing Guide v4.2, and PTES — delivered by TSE Class A and CREST-certified testers.
Methodology
Every web application penetration test follows a structured, repeatable methodology with mandatory manual testing depth in the most consequential vulnerability classes. Automated scanning is used for coverage and consistency, never as a substitute for manual analysis.
- Reconnaissance & mapping — application surface, technology fingerprinting, business logic mapping
- Authentication and session management — OWASP ASVS V2/V3 verification
- Access control — horizontal and vertical privilege escalation, IDOR, business logic abuse (ASVS V4)
- Input validation, injection, and output encoding — SQL/NoSQL injection, XSS, SSRF, XXE, command injection, deserialisation (ASVS V5)
- Cryptography in transit and at rest — TLS configuration, JWT, password storage (ASVS V6/V7/V9)
- Error handling and logging — information disclosure (ASVS V7/V8)
- Data protection and privacy — sensitive data handling, GDPR/KVKK compliance touchpoints (ASVS V8)
- HTTP security and headers — CSP, HSTS, CORS, frame controls (ASVS V14)
- Business logic abuse — workflow manipulation, race conditions, anti-automation bypass
- Client-side controls — DOM XSS, prototype pollution, sub-resource integrity
Deliverables
- Executive report — board and audit-committee suitable, including risk-weighted finding summary
- Technical report — finding-by-finding with reproduction steps, evidence, CVSS v3.1/v4.0 scoring, and remediation guidance
- Retest report — closure evidence on critical and high findings (included)
- Attestation letter — suitable for regulator, auditor, customer, or insurer submission
Regulatory Alignment
Web application penetration tests can be scoped to satisfy specific regulatory drivers — see Regulatory Penetration Testing for BDDK, SPK, TCMB, PCI DSS, DORA, NIS2, and HIPAA-specific scoping.