Implementing New Countermeasures

C.

The next step after the approval of new countermeasures following a risk assessment would be to develop an implementation strategy. Therefore, the correct answer is C.

Explanation:

A risk assessment involves identifying and analyzing potential risks to an organization's information systems and assets. Once risks have been identified and analyzed, the organization can develop and implement countermeasures to mitigate or reduce the risk to an acceptable level.

After the approval of new countermeasures, the organization needs to develop an implementation strategy to ensure that the countermeasures are effectively implemented. The implementation strategy should include the following steps:

1. Define the scope of the implementation: This involves identifying the systems, processes, and assets that are covered by the new countermeasures.

2. Assign responsibilities: The organization needs to identify the individuals or teams responsible for implementing the countermeasures and assign roles and responsibilities.

3. Develop a timeline: The organization needs to establish a timeline for implementing the countermeasures, including milestones and deadlines.

4. Develop a budget: The organization needs to develop a budget for implementing the countermeasures, including any costs associated with hardware, software, training, and consulting.

5. Establish metrics: The organization needs to establish metrics to measure the effectiveness of the countermeasures once they are implemented.

Only after the implementation strategy is developed can the organization schedule the target end date for implementation activities (answer A), budget the total cost of implementation activities (answer B), or calculate the residual risk for each countermeasure (answer D). These steps are important, but they can only be done effectively once the implementation strategy is in place.