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Botnets

A network of compromised computers or devices controlled by a malicious actor.

Description

Botnets are collections of internet-connected devices—often comprising computers, IoT devices, and servers—infected with malicious software that allows a remote attacker to control them without the users' knowledge. These devices, often referred to as 'bots' or 'zombies,' are used collectively to perform various malicious activities, including launching Distributed Denial of Service (DDoS) attacks, sending spam emails, stealing personal information, and distributing malware. The primary advantage of a botnet is the ability to harness the collective power of many devices to execute attacks or operations that a single machine would be incapable of performing. Botnets can vary significantly in size, complexity, and purpose, ranging from small networks used for individual attacks to vast networks that can control millions of devices. Non-Human Identities (NHIs) play a crucial role in botnets, as the compromised devices themselves do not possess human identities but operate under the command of a malicious actor. The growth of the Internet of Things (IoT) has further exacerbated the botnet threat, as more devices become vulnerable to exploitation.

Examples

  • Mirai Botnet: Compromised IoT devices to launch large-scale DDoS attacks.
  • Emotet Botnet: Originally a banking Trojan that evolved into a major malware distribution service.

Additional Information

  • Botnets can be rented out on the dark web for various cybercriminal activities.
  • Efforts to combat botnets include improved security measures for IoT devices and international law enforcement collaborations.

References