Question

a person who seeks to gain unauthorized access to a computer system, with the intent of causing harm or for monetary gain is called a(n):

mobile villain
dark matter
threat actor
virus spreader

Explanation:

A threat - actor is an individual or entity that attempts unauthorized access to a computer system with malicious intent such as causing harm or seeking monetary gain. Mobile villain is not a standard term in this context. Dark matter is a concept in physics, not related to computer access. A virus - spreader is more about spreading malware, not necessarily about unauthorized access for harm or gain in a general sense.

Answer:

C. threat actor