The most likely cause for a risk practitioner to reassess risk scenarios is a change in the regulatory environment. A regulatory environment is the set of laws, rules, and standards that apply to an organization and its activities, such as data privacy, security, compliance, or governance. A change in the regulatory environment can occur due to various factors, such as new legislation, court rulings, enforcement actions, or industry trends. A change in the regulatory environment can affect the risk scenarios that the organization faces, as it may introduce new or modified risks, or alter the probability or impact of existing risks. For example, a new regulation may require the organization to implement additional or different controls, or to report or disclose more information, which may increase the cost, complexity, or vulnerability of the organization’s processes and systems. A change in the regulatory environment may also affect the risk appetite, tolerance, and capacity of the organization, as it may impose different requirements or expectations for the organization’s risk management performance and outcomes. Therefore, a risk practitioner should reassess the risk scenarios when there is a change in the regulatory environment, to ensure that the risk scenarios are accurate, complete, and relevant, and that the risk response strategies and plans are appropriate, effective, and compliant. The other options are not the most likely cause, although they may be related or influential to the riskscenarios. A change in the risk management policy is a change in the rules and guidelines that define how the organization manages its risks, such as the roles and responsibilities, the processes and procedures, the tools and techniques, or the reporting and communication. A change in the risk management policy can affect the risk scenarios, as it may change the way the organization identifies, analyzes, evaluates, and responds to the risks, but it does not directly create or modify the risks themselves. A major security incident is an event or situation that compromises the confidentiality, integrity, or availability of the organization’s information or systems, such as a data breach, a denial-of-service attack, or a ransomware infection. A major security incident can affect the risk scenarios, as it may indicate or reveal the existence or severity of the risks, or trigger or escalate the consequences of the risks, but it is not a cause, rather it is an effect of the risks. An increase in intrusion attempts is an increase in the frequency or intensity of the unauthorized or malicious attempts to access or exploit the organization’s information or systems, such as phishing, malware, or brute-force attacks. An increase in intrusion attempts can affect the risk scenarios, as it may increase the likelihood or impact of the risks, or expose or exacerbate the vulnerabilities of the organization’s processes and systems, but it is not a cause, rather it is a manifestation of the risks. References = Risk Scenarios Toolkit -ISACA, How to Write Strong Risk Scenarios and Statements - ISACA, The Impact of Regulatory Change on Business - Deloitte
