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Malware

Botnet

Botnet

A network of infected devices remotely controlled by an attacker.

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MIGHT YOU BE AFFECTED?

Turn knowledge into action.

How does this work?

Each compromised device contacts command infrastructure for instructions such as denial of service, spam, fraud, data theft or malware distribution.

REAL-WORLD EXAMPLE

« Poorly secured routers are enrolled and used together to overwhelm a website. »

Typical sequence

  1. 1Infect many devices
  2. 2Connect to a command server
  3. 3Execute coordinated commands

Warning signs

  • Unusual repeated outbound traffic
  • Device slow or active while idle
  • Connections to unknown domains

How to protect yourself

  • Change default passwords
  • Update computers and connected devices
  • Filter and monitor outbound connections

If you think you are affected

Disconnect the equipment, reset or reinstall it from a trusted source, then change its credentials and update firmware before reconnecting.

Get help

Last updated: 6 September 2026