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Security Metrics and Reporting

Security Metrics and Reporting

Security Metrics and Reporting

Security Metrics and Reporting

Security Metrics and Reporting

Security Metrics and Reporting

Security Metrics and Reporting

Security Metrics and Reporting

Security Metrics and Reporting

Introduction

Security metrics translate technical security operations into business-relevant information that drives decision-making. Without metrics, security programs cannot demonstrate value, identify weaknesses, or justify resource allocation. Effective security reporting addresses multiple audiences — from technical teams to the board of directors — each with different information needs.

KPIs vs KRIs

Key Performance Indicators (KPIs)

KPIs measure the efficiency and effectiveness of security operations.

class SecurityKPI:

def init(self):

self.metrics = {}

def calculate_mttd(self, detection_times):

"""Mean Time to Detect — average time from compromise to detection."""

if not detection_times:

return None

return sum(detection_times) / len(detection_times)

def calculate_mttr(self, response_times):

"""Mean Time to Respond — average time from detection to containment."""

if not response_times:

return None

return sum(response_times) / len(response_times)

def calculate_coverage_rate(self, monitored_assets, total_assets):

"""Percentage of assets under monitoring."""

if total_assets == 0:

return 0

return (monitored_assets / total_assets) * 100

def calculate_patch_compliance(self, patched_systems, vulnerable_systems):

"""Percentage of systems patched within SLA."""

total = patched_systems + vulnerable_systems

if total == 0:

return 100

return (patched_systems / total) * 100

Key Risk Indicators (KRIs)

KRIs measure the level of security risk exposure.

class SecurityKRI:

def calculate_vulnerability_risk_score(self, vulnerabilities):

"""Weighted risk score based on CVSS and asset criticality."""

total_risk = 0

for vuln in vulnerabilities:

CVSS score * asset criticality multiplier

risk = vuln['cvss'] * (vuln['asset_criticality'] / 5)

Exploit availability multiplier

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