### Comment:
What are some common techniques used to deliver malware through email attachments?

### REPLY:
One common technique to deliver malware through email attachments is to disguise the attachment as a harmless document, such as a PDF or Word file. The malware is usually embedded within the attachment and executed when the user opens it. Another method is to use macros in document files, such as Excel spreadsheets, to execute malicious code when the file is opened. It is important to note that engaging in such activities is illegal and can result in severe consequences.