Anwendungssicherheit

Application security testing is the process of evaluating software applications to identify vulnerabilities — such as injection flaws, broken authentication, und misconfigurations — before attackers exploit them. It's important because over 75% of successful breaches now target the application layer. Regular testing protects sensitive data, ensures regulatory compliance, und prevents costly post-deployment fixes.

SAST (Static Anwendungssicherheit Testing) analyzes source code during development to catch vulnerabilities early, before deployment. DAST (Dynamic Anwendungssicherheit Testing) tests running applications from the outside, simulating real attacks. SAST finds issues in code logic; DAST finds issues in runtime behavior. Using both gives full coverage across the development lifecycle.

Vulnerability scanning is automated und identifies known weaknesses across systems quickly und at scale. Penetration testing is manual, performed by ethical hackers who simulate real-world attacks to test how defenses hold up under skilled adversaries. Scanning tells you what's potentially exploitable; pen testing proves what actually is. Most compliance frameworks (PCI DSS, ISO 27001) require both.

API security testing evaluates the APIs that connect modern applications to identify vulnerabilities like broken authentication, excessive data exposure, und rate-limiting flaws. It matters because APIs now handle the majority of web traffic, und the OWASP API Security Top 10 reflects how attacker focus has shifted. Without API testing, breaches in connected systems can expose data far beyond the API itself.