### Comment:
What are some common techniques used by malware to exploit vulnerabilities in operating systems?

### REPLY:
One common technique used by malware to exploit vulnerabilities in operating systems is through the use of zero-day exploits. These are vulnerabilities that are unknown to the software developers and therefore have no patch or fix available. By leveraging zero-day exploits, malware can gain complete control over the operating system and access sensitive information such as user credentials, financial data, or even take control of the entire system.