When developing a response plan to address security incidents regarding sensitive data loss, it is MOST important

When developing a response plan to address security incidents regarding sensitive data loss, it is

most important to review the data classification policy. A data classification policy is a document that

defines the categories and levels of data based on their sensitivity, value, and criticality, and specifies

the appropriate security measures and handling procedures for each data type. A data classification

policy helps to identify and protect the sensitive data that could be exposed or compromised in a

security incident, and to comply with the relevant laws, regulations, standards, and contracts.

Reviewing the data classification policy is important when developing a response plan, because it

helps to determine the scope, impact, and priority of the security incident, and to select the most

appropriate and effective response actions and strategies. Reviewing the data classification policy

also helps to communicate and coordinate the response plan with the internal and external

stakeholders, such as the data owners, users, custodians, and regulators, and to report and disclose

the security incident as required. The other options are not as important as reviewing the data

classification policy, although they may be part of or derived from the response plan. Revalidating

current key risk indicators (KRIs), revising risk management procedures, and revalidating existing risk

scenarios are all activities that can help to improve or update the risk management process, but they

are not the most important when developing aresponse plan. Reference = Risk and Information

Systems Control Study Manual, Chapter 5, Section 5.3.1, page 5-25.