### Comment:
What are some common techniques used to distribute malware?

### REPLY:
One common technique used to distribute malware is by exploiting zero-day vulnerabilities in popular software applications. These vulnerabilities are not yet known to the software developers, making it easier for attackers to create and distribute malware that can exploit these vulnerabilities. Another method is through the use of botnets, where a network of infected computers is used to distribute malware to other vulnerable systems. Additionally, attackers can also use malicious advertisements, known as malvertising, to spread malware by injecting malicious code into legitimate online advertisements.