### Comment:
What are some common techniques used in malware propagation?

### REPLY:
Some common techniques used in malware propagation include social engineering, where attackers trick users into downloading or executing malicious files, exploiting software vulnerabilities to gain unauthorized access to systems, and using botnets to distribute malware across multiple devices. Other methods include email phishing campaigns, drive-by downloads from compromised websites, and the use of malicious ads or links.