A hacker has successfully infected an internet-facing server which he will then use to send junk mail, take part
in coordinated attacks, or host junk email content.
Which sort of trojan infects this server?

A.
Botnet Trojan

B.
Turtle Trojans

C.
Banking Trojans

D.
Ransomware Trojans

Explanation:
In computer science, a zombie is a computer connected to the Internet that has been compromised by a
hacker, computer virus or trojan horse and can be used to perform malicious tasks of one sort or another under
remote direction. Botnets of zombie computers are often used to spread e-mail spam and launch denial-ofservice attacks. Most owners of zombie computers are unaware that their system is being used in this way.
Because the owner tends to be unaware, these computers are metaphorically compared to zombies. A
coordinated DDoS attack by multiple botnet machines also resembles a zombie horde attack.
Incorrect Answers:
B: Turtle Trojans are about getting backdoor access to an intruder.
C: A Banker Trojan-horse (commonly called Banker Trojan) is a malicious program used in an attempt to obtain
confidential information about customers and clients using online banking and payment systems.
D: Ransomware is a type of malware that can be covertly installed on a computer without knowledge or
intention of the user that restricts access to the infected computer system in some way, and demands that the
user pay a ransom to the malware operators to remove the restriction. Some forms of ransomware
systematically encrypt files on the system’s hard drive, which become difficult or impossible to decrypt without
paying the ransom for the encryption key, while some may simply lock the system and display messages
intended to coax the user into paying. Ransomware typically propagates as a Trojan.
https://en.wikipedia.org/wiki/Botnet