Reviewing the methodology used to conduct the business impact analysis (BIA) is the first thing that a risk practitioner should do when wanting to identify potential risk events that affect the continuity of a critical business process, because it helps to ensure that the BIA is conducted in a consistent, comprehensive, and reliable manner, and that it covers all the relevant aspects and scenarios of the business process and its continuity. A BIA is a process of analyzing the potential impact of disruption to the critical business functions or processes, and identifying the recovery priorities and requirements. A BIA methodology is a set of principles, standards, and techniques that guide and support the BIA process, such as the scope, objectives, data sources, data collection methods, data analysis methods, and reporting methods. Reviewing the BIA methodology is the first thing to do, as it helps to establish the foundation and framework for the BIA process, and to ensure that the BIA results are valid and useful for identifying the potential risk events and their consequences. Evaluating current risk management alignment with relevant regulations, determining if business continuity proceduresare reviewed and updated on a regular basis, and conducting a benchmarking exercise against industry peers are all possible things to do after reviewing the BIA methodology, but they are not the first thing to do, as they depend on the quality and accuracy of the BIA process and outcomes.
References = Risk and Information Systems Control Study Manual, Chapter 4, Section 4.2.1, page 143