CISOs have long been spreadsheet aficionados, soaking up metrics and using them as KPIs for security progress. These metrics have traditionally measured specific systems or single indicators — vulnerabilities detected, percentage of vulnerabilities patched, software and hardware asset inventory coverage, etc. The NIST Cybersecurity Framework (CSF) 2.0 underscored that metrics like these alone are insufficient and probably even improper when used as proxies for security outcomes. Siloed, narrow metrics do have a place in cybersecurity, … More
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