Web App Scanning is a managed security service offered by Greenbone AG that provides comprehensive security testing for web applications. The service operates as a full-service offering where Greenbone experts conduct security assessments on behalf of clients. The service follows a four-step process: initial consultation to define scope, independent security testing by Greenbone experts, delivery of detailed security reports with recommendations, and optional follow-up support for implementation. The testing methodology uses a black box approach, meaning testers have no prior knowledge of the application's internal architecture or code, simulating the perspective of an external attacker. The service covers all OWASP Top 10 vulnerabilities including broken access control, cryptographic failures, injection attacks (SQL, XSS, Command), insecure design, security misconfiguration, vulnerable and outdated components, identification and authentication failures, software and data integrity failures, security logging and monitoring failures, and server-side request forgery (SSRF). Testing includes manual validation of findings and practical prioritization of vulnerabilities. The service supports modern web applications including single-page applications and is updated daily with the latest security information. Source code review is not included in the service scope. Clients receive detailed reports on their security status with actionable recommendations for remediation. Greenbone AG is ISO 27001/9001 certified and maintains GDPR compliance. The service helps organizations meet regulatory requirements for web security standards across various industries.