Greenbone Web App Scanning is a managed security service that performs black box testing of web applications to identify vulnerabilities and security risks. The service is delivered as a full-service offering where Greenbone experts conduct the security assessments on behalf of clients. The service tests for all OWASP Top 10 vulnerabilities including broken access control, cryptographic failures, injection attacks (SQL, XSS, command injection), insecure design, security misconfigurations, vulnerable and outdated components, authentication failures, software and data integrity failures, security logging and monitoring failures, and server-side request forgery (SSRF).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 proof-of-concept demonstrations for identified vulnerabilities. The service supports modern web applications including single-page applications. Testing is conducted using a black box approach, meaning testers have no knowledge of the application's internal architecture or source code, simulating the perspective of an external attacker. The service is updated daily with the latest security information. Clients receive detailed reports on their security status with prioritized findings and actionable recommendations for remediation. The service includes optional software composition analysis integration for checking known CVEs in components. Greenbone is ISO 27001/9001 certified and GDPR compliant.