The most effective practice in protecting personally identifiable information (PII) from unauthorized access in a cloud environment is to utilize encryption with logical access controls. Encryption is a technique that transforms the data into an unreadable or unintelligible form, making it inaccessible or unusable by unauthorized parties. Logical access controls are the mechanisms or rules that regulate who can access, view, modify, or delete the data, based on their identity, role, or privilege. By utilizing encryption with logical access controls, the PII can be protected from unauthorized access, disclosure, or theft, both in transit and at rest, in a cloud environment. The other options are not as effective as utilizing encryption with logical access controls, as they are related to the classification, separation, or audit of the data, not the protection or security of the data. References = Risk and Information Systems Control Study Manual, Chapter 3: IT Risk Response, Section 3.3: IT Risk Response Implementation, page 145.

Section: Volume D
Explanation

is incorrect. Trusted source refers to the commitment of the people designing,
implementing, and maintenance of the control towards the security policy.

Business impact analysis (BIA) is the most helpful tool in identifying loss magnitude during risk analysis of a new system, as it involves estimating the potential financial and operational losses resulting from the disruption or degradation of the system. Recovery time objective (RTO), cost-benefit analysis, and cyber insurance coverage are not the most helpful tools, as they are more related to the recovery, evaluation, and transfer of the risk, respectively, rather than the identification of the loss magnitude. References = CRISC Review Manual, 7th Edition, page 108.

Section: Volume D