Part III: Implementing Effective Cyber Security Metrics that Reduce Risk Realistically | Qualys
Summary: Qualys outlines a three-part framework for cybersecurity metrics: tactical metrics for operational teams, strategic metrics for leadership, and metrics for technical debt tied to end-of-life and end-of-support hardware, software, and operating systems. The tactical section recommends baselining asset and software inventories, including lesser-known software that may hide suspicious tools, and tracking agent coverage by comparing deployed Qualys agents against compatible devices missing them.
Bottom line: The article's own example is a web server running end-of-support web applications with known critical vulnerabilities, and it argues that unsupported systems no longer receive patches and become targets for attackers. A security leader who cannot produce a count of critical vulnerabilities sitting on EOL/EOS assets has no defensible basis for prioritizing the upgrade or migration budget.
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