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

### REPLY:
Some common techniques used in malware propagation are botnets, which are networks of compromised computers that can be used to spread malware, and drive-by downloads, where malware is automatically downloaded and installed onto a user's computer without their knowledge or consent. Another technique is the use of malicious email attachments, which when opened, can execute the malware on the victim's machine. It is important to note that engaging in such activities is illegal and unethical.