IT risk scenarios are hypothetical situations that describe how IT-related risks can affect the organization’s objectives, operations, or assets1. IT risk scenarios help to make IT risk more concrete and tangible, and to enable proper risk analysis and assessment2. IT risk scenarios are developed after IT risks are identified, and are used as inputs for risk analysis, where the frequency and impact of the scenarios are estimated3.
The most important factor to the successful development of IT risk scenarios is threat and vulnerability analysis. Threat and vulnerability analysis is the process of identifying and evaluating the potential sources and causes of IT risks, such as malicious actors, natural disasters, human errors, or technical failures4. Threat and vulnerability analysis can help to:
Define the scope and boundaries of the IT risk scenarios, and ensure that they are relevant and realistic
Identify the critical assets, processes, or functions that are exposed or affected by the IT risks, and assess their value and importance to the organization
Determine the likelihood and methods of the threat events, and the existing or potential weaknesses or gaps in the IT control environment
Estimate the potential consequences and impacts of the IT risks, such as financial losses, operational disruptions, reputational damages, or compliance violations5
References = IT Scenario Analysis in Enterprise Risk Management - ISACA, IT Risk Scenarios - Morland-Austin, Threat and Vulnerability Analysis - Wikipedia, Threat and Vulnerability Analysis - ISACA
