The primary reason for a risk practitioner to report changes and trends in the IT risk profile to senior management is to ensure that IT risk is managed within acceptable limits, because it helps to inform and advise the senior management on the current state and direction of IT risk, and to support the risk-based decision making and prioritization. An IT risk profile is a summary of the key IT risks that an organization faces, and their implications for the organization's objectives and strategy. An IT risk profile may change or evolve over time, due to factors such as new technologies, business initiatives, or external events. Reporting changes and trends in the IT risk profile to senior management is the primary reason, as it helps to ensure that the senior management is aware of and prepared for the IT risk challenges and opportunities, and that the IT risk is managed within the acceptable limits defined by the organization's risk appetite and tolerance. To ensure risk owners understand their responsibilities, to ensure the organization complies with legal requirements, and to ensure the IT risk awareness program is effective are all possible reasons for reporting changes and trends in the IT risk profile, but they are not the primary reason, as they are not directly related to the management of IT risk within acceptable limits. References = Risk and Information Systems Control Study Manual, Chapter 3, Section 3.2.3, page 91

Implementing a file corruption detection tool as a risk response strategy will help to reduce the impact of future events, as it will enable the organization to identify and correct the corrupted files before they cause further damage or loss. A file corruption detection tool is a software that scans and verifies the integrity and validity of the files, and alerts the users or administrators of any anomalies or errors. This helps to minimize the disruption and downtime caused by the data corruption incidents, and to preserve the quality and reliability of the data. Implementing a file corruption detection tool will not reduce the likelihood of future events, as it does not prevent or mitigate the causes or sources of the data corruption incidents. It will not restore availability, as it does not recover or restore the corrupted files, but only detects them. It will not address the root cause, as it does not analyze or eliminate the underlying factors that lead to the data corruption incidents. References = CRISC Certified in Risk and Information Systems Control - Question215; ISACA Certified in Risk and Information Systems Control (CRISC) Certification Exam Question and Answers, question 215.

Brainstorming sessions with key stakeholders are the best way to facilitate the development of relevant risk scenarios, as they can generate diverse and creative ideas, perspectives, and insights about the potential risks and their impact on the organization's objectives and operations. Brainstorming sessions can also foster collaboration, communication, and engagement among the stakeholders, and help to identify and prioritize the most significant and realistic risk scenarios. Brainstorming sessions can be guided by an industry-recognized risk framework, such as ISACA's Risk IT, and supported by qualitative or quantitative risk assessment methodologies, but they are not sufficient by themselves to develop relevant risk scenarios.
References:
*ISACA, How to Write Strong Risk Scenarios and Statements1
*ISACA, Risk Scenario Development and Analysis2

The most important factor for management to consider when deciding whether to invest in an IT initiative that exceeds management's risk appetite is C. Risk tolerance1 According to the CRISC Review Manual, risk tolerance is the acceptable level of variation that management is willing to allow for any specific risk as the enterprise pursues its objectives. Risk tolerance reflects the degree of uncertainty that an organization is prepared to accept in relation to achieving its goals2 When an IT initiative exceeds management's risk appetite, it means that the potential benefits of the initiative are outweighed by the potential negative consequences or losses that could result from the initiative.
However, management may still decide to invest in the initiative if the level of uncertainty or variation is within the organization's risk tolerance. For example, management may accept a higher level of risk for a strategic or innovative initiative that could provide a competitive advantage or a significant return on investment3

The next step for the risk practitioner when a key external technology supplier refuses to provide control design and effectiveness information is to review the supplier's contractual obligations. The contract between the organization and the supplier should specify the terms and conditions for the provision of the service or function, including the requirements for control design and effectiveness information. By reviewing the contract, the risk practitioner can determine if the supplier is breaching the contract and take appropriate actions to enforce the contract or terminate the relationship. Escalating the non-cooperation to management, excluding applicable controls from the assessment, and requesting risk acceptance from the business process owner are other possible steps, but they are not as effective as reviewing the supplier's contractual obligations. References = ISACA Certified in Risk and Information Systems Control (CRISC) Certification Exam Question and Answers, question 11; CRISC Review Manual, 6th Edition, page 144.