Botnet (noun)

A collection of infected Internet-connected devices that are controlled as a group without their owners' knowledge, usually for malicious purposes such as spamming or launching attacks on other devices or websites.

Origin:

Coined from the words "robot" and "network".

Examples:

1. The botnet was used to send thousands of spam emails per hour.
2. The botnet was used to launch a DDoS attack on the website, causing it to crash.
3. The hacker used the botnet to steal sensitive information from numerous victims.
4. The security researcher was able to take control of the botnet and prevent it from causing any further harm.
5. The authorities were able to dismantle the botnet and arrest its operators.