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

### REPLY:
Some common techniques used in malware propagation include spam email campaigns, where malicious attachments or links are sent to unsuspecting users. Another method is through drive-by downloads, where malware is automatically downloaded when a user visits an infected website. Additionally, social engineering techniques such as fake software updates or enticing advertisements are used to trick users into downloading and installing malware.