A user within your organization received an email relating how an account containing a large sum of money has been frozen by the government of a small African nation. The user was offered a 25 percent share of this account if she would help the sender transfer it to a bank in the United States. The user responded to the sender and was instructed to send her bank account number so that it could be used to facilitate the transfer. She complied, and then the sender used the information to drain her bank account. What type of attack occurred?

Phishing.

Explanation:

Phishing is a type of cyber attack in which a disguised email is sent to receive the personal information of a person. The purpose of sending such an email is to deceive the user that their bank needs information that is required for their needs. So, when the user sends personal details such as passwords or credit card information they are looted.

In the given case, the user is the organization has received a fraudulent email. And it is phishing, a cyber attack.

Therefore. phishing is the correct answer.

d.) continue to rise rapidly

answer; provide for the common defense: