PiSence
Application Security Assessments

Web Application Penetration Testing

Find and fix real-world web application vulnerabilities before attackers do — OWASP Top 10, session/auth, business logic and more.

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Overview

Web Application Penetration Testing (Web VAPT) is a simulated attack against your public and authenticated web application to identify vulnerabilities that could lead to data theft, account takeover or business disruption. Our testers combine automated scanning with deep manual analysis and business-logic exploration to reveal both common and complex attack paths.

Why companies need Web App Pen Testing

Most breaches start at the web layer. Modern apps combine complex frontend frameworks, REST/GraphQL APIs, microservices and third-party integrations — every interface is a potential attack surface. Pen testing helps you find exploitable issues early, reduce breach risk, and demonstrate due diligence to customers and regulators.

Who should get this

SaaS platforms, e-commerce sites, customer portals, admin consoles, or any business that serves users through a web interface — especially if you handle sensitive data (PII, payments) or rely on third-party integrations.

Key Benefits

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Reduce risk of data breaches and account takeover

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Demonstrate compliance and due diligence (PCI, GDPR, SOC2 evidence)

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Actionable remediation with PoCs and code-level guidance

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Prioritized fixes that address business impact first

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Retest option to validate fixes

Scope — What we test

Authentication & session management, access control and privilege escalation, injection (SQL/NoSQL), XSS, CSRF, SSRF, broken object references, insecure deserialization, insecure configuration, sensitive data exposure, business-logic abuse and API interactions that back the UI.

Methodology

  1. Scoping & threat modelling — agree targets, accounts, and exclusions
  2. Reconnaissance & mapping — enumerate endpoints, parameters and flows
  3. Automated scanning with tuned scanners to reduce noise
  4. Deep manual testing & exploit attempts to create PoC
  5. Risk classification (CVSS + business impact) and remediation guidance
  6. Report delivery + retest after remediation

Deliverables

Comprehensive report with executive summary, prioritized findings, reproducible PoCs, remediation steps, risk ratings, timeline and optional retest pack. Optional secure-recorded walkthrough meeting to transfer knowledge to dev and ops teams.

Timeline & pricing guide

Typical timelines: small app (1–3 days), medium (4–10 days), large/complex (custom). Pricing depends on scope & authentication complexity — we provide a fast scoping call and fixed-price proposals.

Example (anonymized)

We found a chained vulnerability where an insecure direct object reference (IDOR) combined with a weak session control allowed lateral access to customer data. After remediation recommendations and a retest, the issue was closed and accepted by the client as part of their SOC2 evidence.

Frequently asked questions

Common questions we hear before starting an assessment — click a question to reveal a short, clear answer.

Small apps: 1–5 days. Medium: 5–10 days. Complex systems: custom timeline.

Tools & integrations
Tools & backlinks that may be used for this assessment
Backlinks included