The most important information to include in monthly information security reports to the board is the trend analysis of security metrics. Security metrics are quantitative and qualitative measures that indicate the performance and effectiveness of the information security program and the alignment with the business objectives. Trend analysis is the process of comparing and evaluating the changes and patterns of security metrics over time. Trend analysis can help to identify the strengths and weaknesses of the information security program, the progress and achievements of the security goals and initiatives, the gaps and opportunities for improvement, and the impact and value of the information security investments. Trend analysis can also help to communicate the current and future security risks and challenges, and the recommended actions and strategies to address them. Trend analysis can provide the board with a clear and concise overview of the information security status and direction, and enable informed and timely decision making.
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* CISM Review Manual 15th Edition, page 1631
* The CISO's Guide to Reporting Cybersecurity to the Board2
* CISM 2020: Information Security Metrics and Reporting, video 13