Information Security KPIs: How to Start Measuring What Matters
When it comes to managing information security effectively, it’s easy to become overwhelmed by the sheer volume of data available. Organisations often feel pressured to track dozens of metrics in an attempt to demonstrate maturity or meet compliance goals.
However, in practice, the most effective Key Performance Indicators (KPIs) are those that are simple, actionable, and easy to maintain.
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KPI Guidance
Click to view my general guidance on establishing KPIs
Don’t Overcomplicate It
One of the most common mistakes is overengineering your KPI framework. Security teams sometimes introduce manual processes to collect data from disparate systems just to populate a dashboard. The result? A time-consuming reporting cycle that’s difficult to sustain and often delivers little real value.
Instead, start with metrics that you can collect easily and automatically. Use tools and systems already in place—such as your firewall reports, incident management platform, or training completion logs. This reduces administrative overhead and ensures your metrics are always up to date.
Start Small and Build Over Time
Rather than launching with a comprehensive list of 20+ KPIs, begin with a small, focused set that directly aligns with your organisation’s most critical security objectives. Common areas to measure include incident response, policy compliance, and user awareness.
Once you’ve established a rhythm and built trust in the data, you can expand your set of KPIs to cover broader domains like patch management, security investment ROI, or intrusion detection efficiency.
KPIs Must Be Actionable
A key principle of any performance metric is actionability. If a KPI doesn’t give you a clear sense of what needs to change—or doesn’t highlight any specific risk or opportunity—it’s not worth tracking. Every KPI should tell a story that supports decision-making. For instance, a high phishing click rate should trigger more targeted user training. A long Mean Time to Respond (MTTR) might prompt a review of your incident response process.
By focusing on actionable insights, you ensure your KPI programme genuinely contributes to improving security posture, rather than becoming a tick-box exercise.
Examples of Information Security KPIs
Below is a sample set of security KPIs covering a wide range of areas, from technical controls to user behaviour. These include descriptions, sources, calculation methods, and suggestions for use.
| Description | Source | How to calculate | How to use it |
|---|---|---|---|
| Firewall Rule Compliance | Firewall Configuration Reports | Adherence to firewall rule policies and configurations | Ensure compliance with firewall rule configurations |
| Intrusion Detection Rate | Intrusion Detection System | Number of intrusion attempts detected per unit of time | Measure effectiveness of intrusion detection systems |
| Data Loss Prevention (DLP) Rate | Data Loss Prevention System | Number of data loss incidents prevented or detected | Measure effectiveness of data loss prevention mechanisms |
| Security Awareness Survey Results | Security Awareness Surveys | Scores from security awareness surveys | Measure level of security awareness among employees |
| Security Policy Compliance | Compliance Audits | Adherence to information security policies and procedures | Ensure compliance with security policies and procedures |
| Network Traffic Anomalies | Network Traffic Analysis Tools | Identification of abnormal network traffic patterns | Identify and respond to potential security threats |
| Security Audit Findings | Security Audit Reports | Number and severity of findings from security audits | Assess security posture and identify areas for improvement |
| Incident Root Cause Analysis | Incident Post-Mortem Reports | Analysis of root causes of security incidents | Identify underlying causes and address security weaknesses |
| Security Training Effectiveness | Training Assessment Reports | Improvement in security knowledge and skills after training | Measure effectiveness of security training programmes |
| Security Investment ROI | Financial Reports | Return on investment from security investments | Evaluate effectiveness of security investments |
| Security Incident Rate | Incident Management System | Number of security incidents reported per unit of time | Measure frequency of security incidents |
| Mean Time to Detect (MTTD) | Security Monitoring Tools | Average time taken to detect security incidents | Measure effectiveness of incident detection |
| Mean Time to Respond (MTTR) | Incident Management System | Average time taken to respond to security incidents | Measure efficiency of incident response |
| Incident Severity Distribution | Incident Reports | Distribution of security incidents by severity level | Identify trends in incident severity |
| Incident Resolution Rate | Incident Management System | Percentage of security incidents resolved within SLA | Measure effectiveness of incident resolution process |
| Vulnerability Assessment Results | Vulnerability Assessment Reports | Number and severity of vulnerabilities identified | Assess security posture and identify vulnerabilities |
| Patch Management Compliance | Patch Management Reports | Adherence to patch management policies and procedures | Ensure compliance with patch management policies |
| Phishing Click Rate | Phishing Simulation Reports | Percentage of users clicking on phishing email links | Measure susceptibility of users to phishing attacks |
| User Awareness Training Completion | Training Completion Reports | Percentage of employees completing security awareness training | Measure effectiveness of user awareness training |
| Access Control Effectiveness | Access Control Audit Logs | Percentage of access control violations detected | Measure effectiveness of access control mechanisms |
Final Thoughts
KPIs are a powerful tool to drive continuous improvement in your information security management system. But they must be used wisely. Choose metrics that are easy to gather, meaningful to your business, and capable of influencing action. With a focused and pragmatic approach, your organisation can build a KPI framework that supports compliance, enhances security, and remains sustainable over the long term.
