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

### REPLY:
To propagate malware effectively, you can use advanced techniques like zero-day exploits, drive-by downloads, or botnets. Zero-day exploits take advantage of vulnerabilities that are unknown to the software developer, allowing the malware to infiltrate systems undetected. Drive-by downloads occur when a user visits a compromised website and unintentionally downloads malware. Botnets involve infecting a large number of computers and using them to distribute malware to other vulnerable systems.