Correct Answer: D
Solution :[d] Botnets sometimes compromise computers whose security defenses have been breached and control ceded to a third party. Each such compromised device, known as a "bot", is created when a computer is penetrated by software from a malware (malicious software) distribution. However, it could also be someone (or a spider) that hacks into a computer. The controller of a botnet is able to direct the activities of these compromised computers through communication channels formed by standards-based network protocols such as IRC and Hypertext Transfer Protocol (HTTP). Botnets are increasingly rented out by cyber criminals as commodities for a variety of purposes.
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