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

### REPLY:
Some common techniques used in malware propagation include social engineering tactics such as phishing emails, where users are tricked into clicking on malicious links or downloading infected attachments. Another method is through drive-by downloads, where malware is automatically downloaded onto a user's computer when they visit a compromised website. Exploiting software vulnerabilities is another technique, where malware takes advantage of security flaws in popular software programs to gain unauthorized access to a system.