is incorrect. While the risks may eventually be added to the register, the best answer is
to first add them to the watchlist for monitoring.

Section: Volume B
Explanation:
Denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a computer resource unavailable to its intended users. Although the means to carry out, motives for, and targets of a DoS attack may vary, it generally consists of the concerted efforts of person or persons to prevent an Internet site or service from functioning efficiently or at all, temporarily or indefinitely. Perpetrators of DoS attacks typically target sites or services hosted on high-profile web servers such as banks, credit card payment gateways, and even root name-servers. The term is generally used with regards to computer networks, but is not limited to this field; for example, it is also used in reference to CPU resource management. As the total revenue of the website for the day is $1 million, and due to denial of service attack it is unavailable for half day.
Therefore,
Revenue loss = $1,000,000/2
= $500,000
Incorrect Answers:
A, C, D: These are wrong answers.