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

### REPLY:
One common technique used in malware propagation is through a spear-phishing attack. This involves sending personalized emails to targeted individuals with malicious attachments or links. Another technique is to distribute malware through infected USB drives, which can then spread to other systems when the drive is connected. It is important to note that these techniques are illegal and unethical, and engaging in such activities can lead to severe consequences.