What is a Botnet?
A Botnet is a network of compromised devices, often infected with Malware, that are controlled remotely by an attacker. These devices, known as "bots" or "zombies," can include servers, endpoints, and IoT systems, all coordinated through command-and-control (C2) infrastructure.
Botnets are typically formed through large-scale attacks such as Phishing, Exploits, or Worm propagation, enabling attackers to compromise thousands or millions of devices. They represent a significant expansion of an organization's Attack Surface and are frequently leveraged in Denial of Service (DoS / DDoS) attacks.
What is a Botnet used for?
Botnets are used to execute large-scale coordinated attacks, including DDoS campaigns, credential stuffing (a form of Brute Force Attack), spam distribution, and data theft. Their distributed nature makes them difficult to detect and mitigate using traditional perimeter-based Security Controls.
Effective defense against botnets requires network visibility through tools like SIEM and IDPS, as well as proactive Threat Hunting and External Attack Surface Management (EASM). Organizations must also focus on endpoint protection using EDR and robust patching strategies.
