Users report that the database on the main server cannot be accessed. a database administrator verifies the issue and notices that the database file is now encrypted. the organization receives a threatening email demanding payment for the decryption of the database file. what type of attack has the organization experienced?
a. dos attack
b. trojan horse
c. ransomeware
d. man-in-the-middle attack

(C) Ransomware

Explanation:

The ransomware is one of the type of malware software design which is used for blocking the user accessing unauthorized and also without paying money.

The most of the ransomware software encrypt the computer accessing and the files as they demand for the payment dues for again restoring the access.  

It also encrypt the user account and the information until the correct decrypt key are get entered into the system. So, according to the given situation, the ransomware attack are experienced in an organization.  

Therefore, Option (C) is correct.