A botnet can be characterized as
A.
An network used solely for internal communications
B.
An automatic security alerting tool for corporate networks
C.
A group of dispersed, compromised machines controlled remotely for illicit reasons.
D.
A type of virus
Explanation:
C: Bots and botnets are most insidious implementations of unauthorized, remote control of compromised systems. Such machines are essentially zombies controlled by ethereal entities from the dark places on the Internet. Page 749.
Bots and botnets are most insidious implementations of unauthorized, remote control of compromised systems.