What Is Web Application Penetration Testing?

Web Applications Are a Primary Attack Target

Web applications are internet-facing, handle sensitive user data, and are built under constant development pressure, making security an easy afterthought. They're among the most commonly exploited assets in data breaches. Web application penetration testing is the most effective method available for identifying security flaws before attackers do.

What Is Web App Pentesting?

Web application penetration testing is a manual security assessment of your web application, its APIs, and the underlying infrastructure. Our engineers assess the application from multiple angles: as an unauthenticated external attacker, as a standard logged-in user, and as a privileged user — attempting at each level to access data and functionality they shouldn't be able to reach.

What We Look For

• Injection vulnerabilities (SQL, command, LDAP, XPath)
• Broken authentication and session management
• Sensitive data exposure and insecure transmission
• Insecure direct object references and broken access controls
• Security misconfigurations and verbose error messages
• Cross-site scripting (XSS) and cross-site request forgery (CSRF)
• Business logic vulnerabilities unique to your application
• API authentication and authorization flaws

Why Automated Scanners Aren't Sufficient

Automated scanners are fast and inexpensive, but they miss the vulnerabilities that matter most: business logic flaws, authentication bypasses, and complex attack chains. A scanner finds a known SQL injection pattern; a skilled engineer finds the combination of three individually-minor issues that together allow account takeover. Grid32's methodology is manual-first.