### Comment:
What are some common propagation methods used by malware?

### REPLY:
A popular propagation method used by malware is called "botnets". In this method, the malware infects multiple computers, creating a network of compromised devices controlled by the attacker. The infected devices, known as "bots" or "zombies", can then be used to propagate the malware further by sending out spam emails, conducting distributed denial-of-service (DDoS) attacks, or spreading malicious content.