You are the risk professional of your enterprise. You need to calculate potential revenue loss if a
certain risks occurs. Your enterprise has an electronic (e-commerce) web site that is producing US
$1 million of revenue each day, then if a denial of service (DoS) attack occurs that lasts half a day
creates how much loss?

A.
US $250,000 loss

B.
US $500,000 loss

C.
US $1 million loss

D.
US $100,000 loss

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 nameservers. The term is generally used with regards tocomputer networks, but is not limited to this
field; for example, it is also used in reference to CPU resource managementAs 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