Greenbone, founded in 2008 and headquartered in Osnabruck, Germany, originated from the OpenVAS open-source vulnerability scanning project and is a world-leading provider of open-source vulnerability management and security testing solutions, with the Greenbone Security Manager (GSM) as its core product.
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2 resultsVulnerability Scanner Comparison: Best Security Scanning Tools 2026
Vulnerability scanners help identify security weaknesses before attackers do. Compare Nessus, OpenVAS, Qualys, and other top scanners.
Vulnerability Scanning Basics: How to Find Vulnerabilities on Your Server
"Is my server secure?" Feelings are not evidence — scanning is. This guide explains what vulnerability scanning is, what port/service/dependency scans each check, how to use tools like Nmap, OpenVAS, and Trivy, and how to use CVSS scores to decide which vulnerability to fix first, with an intro workflow and frequency advice.