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Web Application Penetration Testing

Your web application is your largest attack surface. We go beyond automated scanning, manually dissecting authentication flows, business logic, and API integrations using purpose-built tools and deep offensive experience.

40%

of all cyber incidents involve exploitation of public-facing applications (IBM X-Force 2026)

Why This Matters

Web applications account for the majority of external breaches. Automated scanners miss business logic flaws, chained vulnerabilities, and context-dependent issues that only manual testing reveals. A missed IDOR or broken access control can expose your entire customer database.

What We Test

Authentication and session management
Authorization and access control across roles and tenants
Business logic vulnerabilities
API security (REST, GraphQL, WebSocket)
Input validation and injection testing
File upload and handling
Cryptographic implementation and key management
Third-party integrations and OAuth/SSO flows
Rate limiting and anti-automation controls
Error handling and information disclosure

How We Work

OWASP ASVS 5.0 aligned methodology with PTES phases. Manual-first approach with purpose-built tools (not a Nessus scan with a cover page). Black-box, grey-box, and white-box options. In practice, grey-box (authenticated, with documentation) yields the deepest results for the time invested.

Targeted

Focused on specific high-risk areas (auth, payments, admin)

Full-Scope

Full application coverage against OWASP ASVS

Continuous

Recurring assessments aligned with your release cycle

What You Get

Executive summary for leadership (business impact, risk rating)
Technical findings with CVSS 4.0 scoring and proof-of-concept for each
Step-by-step remediation guidance (not just "fix the code"): includes actual code examples where applicable
Prioritized action plan
One round of retesting included (within 90 days)
Interactive walkthrough session with your development team

Compliance & Framework Support

PCI DSS (11.4)SOC 2 (CC4.1)ISO 27001 (A.8.8)DORANIS2

Why SharpSec

Who's actually doing the testing?

Led by a senior engineer who has tested web applications for financial institutions and Fortune 500 companies. Senior-level expertise on every engagement, from scoping through final report.

We build the tooling

We build security tools used industry-wide. The same engineering mindset goes into finding your vulnerabilities.

Beyond OWASP Top 10

We test business logic, race conditions, and chained attack scenarios that frameworks don't cover.

Frequently Asked Questions

Related Services

Mobile Penetration Testing

Binary reverse engineering and runtime analysis across iOS and Android. OWASP MASVS aligned.

Secure Code Review

Manual source code analysis across Java, .NET, Python, Node.js, and Go.

Network & Cloud Penetration Testing

External, internal, and cloud (AWS, Azure, GCP) infrastructure testing.

Discuss Your Project

Tell us about your security requirements and we'll scope the right engagement.